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April 16, 2014

Search: potassium permanganate reacts with oxalic acid h2c204

Number of results: 12,819

Chemistry
An unknown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the solid with NaOH. The appropriate reactions are as follows: Citric acid: H3C6H5O7 (aq) + 3NaOH (aq) -> 3H2O (l) + Na3C6H5O7 (aq) Tartaric acid: ...
Tuesday, May 7, 2013 at 1:25pm by Sarah

Chemistry
What acid and what strong base would react in aqueous solution to produce the following salts in the formula equation? Write the balanced formula equation for each reaction. a) potassium perchlorate b) cesium nitrate c) calcium iodide I don't need just the answers, I'm ...
Wednesday, December 28, 2011 at 4:59pm by Steven

Chemistry
Ammonia reacts with oxygen at 120 C to form NO and H20 in a sealed 40-L container. When 34 g of ammonia reacts with 96 g of oxygen, what is the partial pressure of the NO? What is the total pressure?
Sunday, May 20, 2012 at 11:31am by Erin

chemistry
You have to have the initial concentration of the sulfuric acid. Here is an example: Pretend it is concentrated H2SO4 (12M). you are diluting it 12/.02 or 60 times. So you need one part acid, 59 parts water. 1 part acid is 250/60, or 4.1ml acid and the remainder is water. ...
Saturday, April 17, 2010 at 1:40am by bobpursley

chemistry
HAc = CH3COOH = acetic acid KOH = potassium hydroxide mL KOH x M KOH = mL HAc x M HAc Substitute and solve for M KOH
Friday, November 11, 2011 at 9:25am by DrBob222

chemistry
One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g); ΔH= 87.9 kJ How much heat is liberated at constant pressure if 0.416 g of iron reacts with 42.0 mL of 0.457 M HCl?
Thursday, December 2, 2010 at 4:39pm by Jake

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
Saturday, February 22, 2014 at 2:46pm by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
Sunday, February 23, 2014 at 4:30am by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
Sunday, February 23, 2014 at 8:25am by Roro

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)
Sunday, February 23, 2014 at 12:11pm by Roro

ap bio
10 . Which one of the following statements is NOT true about the resting potential? A. The neuron's plasma membrane is much more permeable to potassium than to sodium. B. The concentration of sodium is much higher inside the cell than outside. C. The sodium-potassium pump ...
Thursday, November 13, 2008 at 2:49pm by carol

acids and alkalis
Acids - vinegar = ethanoic acid milk = latic acid car battery = sulphuric acid lemon, oranges = citric acid cola = phosphoric acid Alkalis - toothpaste = soduim hydrogeon household cleaner = ammonia oven cleaner = soduim hydroxide indigestion tablets = magnesuim hydroxide
Saturday, November 4, 2006 at 5:56am by Answers

CHEM HELP
Nicotinic acid (niacin) is a monoprotic acid with the formula HC6H4NO2. A solution that is 0.012M in nicotinic acid has a pH of 3.39 at 25*C. What is the acid-ionization constant, Ka and pKa for this acid at 25*C? is the ionization equation: HC6H4NO2+ H20(l) <>C6H4NO^-(...
Tuesday, March 24, 2009 at 12:18pm by Sandra

Chemistry
We're learning about single displacement reactions. What happens when Mg + Zn two nitrate reacts? And when Al + Zn two nitrate reacts? Are there colour changes or precipitates formed?
Thursday, March 17, 2011 at 2:53pm by Mar

Chemistry
Na2CO3 reacts with H2SO4 to give respective salt water and carbon dioxide. Calculate the mass of pure salt formed when 300 g of Na2CO3 of 80% purity reacts with H2SO4
Sunday, March 24, 2013 at 2:46pm by Aurab

chemistry
HNO3 (g) + 4H2 (g) ---> NH3 (g) + 3H2O (g) deltaH = -637 kJ Calculate the enthalpy change when one mole of hydrogen reacts; and What is the enthalpy change when 10.00 g of ammonia is made to react with excess of steam to form nitric acid and hydrogen gases?
Saturday, March 8, 2008 at 3:35pm by cooper

chem
HNO3 (g) + 4H2 (g) ---> NH3 (g) + 3H2O (g) deltaH = -637 kJ Calculate the enthalpy change when one mole of hydrogen reacts; and What is the enthalpy change when 10.00 g of ammonia is made to react with excess of steam to form nitric acid and hydrogen gases?
Saturday, March 8, 2008 at 8:39pm by Anonymous

college
If 0.0900 g of a metal, M, reacts with excess hydrochloric acid to form 5.00*10(exp.)-3 moles of hydrogen gas and a solution of MCl(subscript)3. Calculate the molar mass of metal, M and identify it. The unbalanced equation is: M(s)+ HCl(aq) =>MCl(sub.)3 + H(sub)2.
Tuesday, November 30, 2010 at 12:56am by Alex

chemistry
5% acetic acid is 5 g acid/100 g soln. Acid to titrate is 5g x (2.5/100) = 0.125 g acid. Convert to moles. moles = grams/molar mass. Then moles acid = moles NaOH at the equivalence point. moles NaOH = M x L. Solve for L and convert to mL.
Monday, July 26, 2010 at 10:55pm by DrBob222

Chemistry
It depends upon which acid is being titrated with NaOH because the equivalence point is NOT always at 7.0. However, again, I assume this is a simple case. Use mL(acid) x N(acid) = mL(NaOH) x N(NaOH). The only unknown is N(acid).
Wednesday, February 17, 2010 at 1:10pm by DrBob222

chemistry please help
Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol 2nd electron affinity ...
Sunday, April 17, 2011 at 11:57am by Joanie

CHEM please!!! help
Calculate the lattice energy of potassium oxide from the following data: Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond energy of oxygen: +498 kJ/mol First ionization energy of potassium: +419 kJ/mol 1st electron affinity of oxygen: -141 kJ/mol 2nd electron affinity...
Tuesday, April 19, 2011 at 10:11am by Joanie

SCI/241
Hello, I have to answer this question for my assignment. Compare and contrast how different electrolytes-sodium, potassium, and chloride-function in the body. This is what I have so far but I am not sure if this is the whole answer. The Electrolytes in your body are sodium and...
Friday, December 10, 2010 at 10:23am by Nikol

chemistry
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to yield the ester isopentyl acetate which has the odour of bananas. If the yield from the reaction is 45%, how many grams of isopentyl acetate are formed when 3.90 g of acetic acid and 6.28 grams of isopentyl ...
Thursday, November 17, 2011 at 3:47pm by kim

Algebra
100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases both the volume of ...
Wednesday, October 23, 2013 at 8:28pm by Stacey

12th grade chemistry
A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of iron in the wire.
Monday, November 10, 2008 at 4:45pm by jerry

chemistry 11 grade
A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of iron in the wire.
Sunday, January 2, 2011 at 3:20am by Farah

Chemistry
I don't agree with the supposition that a given metal will react faster with a strong acid than a weak one. I think the supposition is based on the fact that weak acids are not completely ionized; therefore, there are more hydrogen ions in a strong acid (one that ionizes ...
Wednesday, April 15, 2009 at 8:44pm by DrBob222

Chemistry
Rank the following solutions in order of increasing acidity. 1 M phenol 1 M boric acid 1 M cyanic acid 1 M formic acid 1 M hydrochloric acid 2. Rank the following solutions in order of increasing basicity. 1 M C3H5O3Na 1 M KF 1 M KOCN 1 M KOCl All I know is that HCl is the ...
Sunday, October 23, 2011 at 12:07pm by Neha

chemistry
Calcium carbonate reacts with hydrochloric acid according to the following reaction: CaCO3 (s) + 2 HCl (aq) --> CaCl2 (aq) + H2O (l) + CO2 (g) How many grams of calcium carbonate would be required to neutralize 50.0 cm3 of 8.00 M HCl?
Sunday, November 7, 2010 at 7:12pm by Christina

chemistry
Zinc metal reacts with hydrochloric acid to produce hydrogen gas according to the equation below. What volume of hydrogen at STP is released when 15.1 grams of zinc react at STP? Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)
Thursday, June 9, 2011 at 1:04pm by katydid

Chemistry for health science
Considering the neutralization reaction when nitric acid reacts with solid iron(II)carbonate. What is the minimum volume of 2.00 M HNO3 necessary to react completely with 1.06 kg of solid iron(II) carbonate, FeCO3 ?
Sunday, March 23, 2014 at 1:33pm by Anonymous

Chemistry
An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is? An acid HA has Ka = 2.28 x 10^-4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to a. 2.930 % b. 3.662 % c. 2.564 % d. 0.498 % e...
Thursday, May 26, 2011 at 9:21pm by Cheryl

Chem
A mixture of chromium and zinc weighing .362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted 225 mL of dry hydrogen gas was collected at 27 C and 750 torr. Determine the mass percent Zn in the metal sample. [Zinc reacts with ...
Sunday, February 25, 2007 at 5:26pm by Jim

chemisrty
Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of water, and has a density of 1.22 g/mL at 55 oC. Calculate the following: a) the mass percentage of ascorbic acid b) the mole fraction of ascorbic ...
Monday, January 16, 2012 at 4:45pm by lyan

chemistry
The decomposition of potassium chlorate, KClO3, gives oxygen gas and solid potassium chloride. How many grams of KClO3 are needed to produce 5.00 L of Oxygen gas at STP? Suppose that the reaction described above produces 4.80 L of O2 in the laboratory. What is the percent yield?
Tuesday, April 10, 2012 at 10:28pm by Emily

Chemistry!
1. Write the equation and prepare an ICE chart. ............NH3 + HOH ==> NH4^+ + OH^- initial......0.100........0........0 change.......-x..........+x.......+x final.......0.100-x.......x.........x Kb = (NH4^+)(OH^-)/(NH3) Substitute into Kb expression from the ICE chart ...
Wednesday, December 15, 2010 at 5:01pm by DrBob222

chemistry
Acids: A. Nitrous acid B. Manganic acid, but you need a subscript on the H C. Hydrocyanic acid D. Hydrogen sulfide Bases: A, B, C, D: (metal name) hydroxide
Thursday, December 13, 2007 at 12:36am by drwls

Chemistry-DrBob222
Is HBr an acid? I got mixed up between telling if its a salt or acid, but salts do not have H+ ions, so would it be an acid?
Tuesday, October 12, 2010 at 7:16pm by Anonymous

bio101
Carbon dioxide forms a weak acid called carbonic acid when dissolved in water. How can this be a significant factor in the formation of acid rain?
Tuesday, August 6, 2013 at 12:59pm by merry

CHEMISTRY! DR.BOB PLEASE HELP
I'm sorry but I don't know what to do with the W3 in HCl. Does it form WCl3? and is it oxidized with permanganate to W^6+
Wednesday, May 29, 2013 at 2:09am by DrBob222

NEED HELP WITH CHEMISTRY HW
Ascorbic acid (vitamin C) is a diprotic acid having the formula H2C6H6O6. A sample of a vitamin supplement was analyzed by titrating a 0.2894 g sample dissolved in water with 0.0215 M NaOH. A volume of 10.83 mL of the base was required to completely neutralize the ascorbic ...
Saturday, October 1, 2011 at 7:50pm by Anonymous

chemistry
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 114 kj of heat?
Sunday, February 15, 2009 at 12:40pm by reese

chemistry help!
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 105 kJ of heat?
Wednesday, September 19, 2012 at 10:29am by student

Chemistry
The student can add acid back to the solution. The acid can be either a standardized solution (the student will need the volume and the molarity of the standardized acid added) or the student can add a known mass of a solid acid. So,e care must be used in what acid to use in ...
Sunday, October 27, 2013 at 7:45pm by DrBob222

chem
Potassium nitrate has a lattice energy of -163.8 kcal/ mol and a heat of hydration of -155.5 kcal/ mol . How much potassium nitrate has to dissolve in water to absorb 105kj of heat? Answer in kg.
Wednesday, September 19, 2012 at 2:02am by michelle

chem- acids and bases
You're on the right track. ............NO2^- + HOH ==> HNO2 + OH^- initial.....0.1.............0........0 change......-x...............x.......x equil......0.1-x.............x........x Kb for NO2^- = (Kw/Ka for HNO2) = (HNO2)(OH^-)/(NO2^-) (HNO2) = (OH^-) = x (NO2^-) = 0.1-...
Saturday, April 16, 2011 at 5:32pm by DrBob222

Solving Rational Equations
100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases both the volume of ...
Wednesday, October 23, 2013 at 8:27pm by Stacey

ionic or covalent
Sodium Chloride- Ionic Calcium Chloride- Ionic Potassium Iodide- Ionic Citric Acid- Covalent Sucrose- Covalent
Monday, June 19, 2006 at 1:26pm by becca

chemistry
calcium hydroxide reacts in a neutralization reaction with sulfuric acid in a 1:1 ratio to form water and calcium sulfate. if you have 23.5 grams of calcium hydroxide, how many milliliters of water can you form? how do i use dimensional analysis to solve this?
Friday, December 12, 2008 at 11:20am by lyne

chemistry
Am doing a lab report on the determination of the product of a redox reaction: the reaction of bromate and hydroxylammonium ions. here is the lab Experiment: In this experiment you will determine the equation of a redox reaction by the use of experimental data. This is a ...
Tuesday, October 26, 2010 at 4:22pm by khela

AP Chem
A student chemist named Hannah Montana set up an electrical conductivity tester similar to that shown on page 141 and conducted an experiment involving two clear, colorless liquids, identified as solution A and solution B. Solution A and Solution B are both 0.050 M. The ...
Monday, October 11, 2010 at 12:38pm by dylan

Chemistry
Copper metal reacts with concentrated nitric acid according to the following balanced equation: 3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(s) + 2NO(g) + 4H2O(l) Calculate the mass in grams of the excess reagent remaining after the complete reaction of 4.63 g of Cu with 9.26 g of HNO3. ...
Tuesday, November 6, 2007 at 7:13pm by Hector

chemistry
copper metal reacts with nitric acid. assume that the reaction is 3Cu(s) + 8HNO3(aq) > 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l). if 5.58 grams of Cu(NO3)2 is obtained, how many grams of nitrogen monoxide would have formed
Friday, October 12, 2012 at 11:42am by robert

chemistry
Significantly, if stomach acid is very dilute (excess acid), then its weight will include the solvent the acid is in. Of course it would be easy to consume 1000 times its weight if the "excess " acid were very dilute. One is not neutralizing stomach acid, just the "excess".
Tuesday, July 6, 2010 at 4:23pm by bobpursley

chemistry
What is the coefficient of oxygen in the following equation for the reaction of potassium (K) with oxygen (O2) to form potassium oxide (K2O? __ K + ___ O2 -> ___ K2O is it 4, 3, 2, or 1?
Monday, April 7, 2008 at 1:29pm by Sarah

Biochemistry
What are the structures of the products of a complete acid hydrolysis of glycerophospholipid where the alcohol is ethanolamine, HOCH2CH2NH2 and the fatty acid is stearic acid. Can anyone help on this one? Confused here...
Sunday, November 30, 2008 at 6:03pm by Scott

Biochemistry
What are the structures of the products of a complete acid hydrolysis of glycerophospholipid where the alcohol is ethanolamine, HOCH2CH2NH2 and the fatty acid is stearic acid. Can anyone help on this one? Confused here...
Monday, December 1, 2008 at 6:11pm by Scott

chem lab (webwork)
for HCL, which is a strong acid, the answer is 8.00 mL For the other acid, which is a weak acid, you must use the ka formula
Tuesday, April 13, 2010 at 7:20pm by random21

Chemistry
Can the 5% approximation be used to determine the pH of the following solutions? How do I do this question? (A) 0.56 M hypochlorous acid - yes (B) 3.00 M nitrous acid - yes (C) 0.010 formic acid - no
Wednesday, December 15, 2010 at 4:55pm by LISA

Chemistry
L(NaOH) x M(NaOH) = mols(NaOH) Mols NaOH = mols acid g acid/molar mass acid = mols acid solve for g acid. Post your work if you get stuck.
Monday, October 8, 2007 at 10:19pm by DrBob222

Chemistry
A solution of a weak acid will consist of the acid and its conjugate base. True or False false Yes, of course: Take acetic acid acetic acid + H2O<-->H3O+ + acetateion- The system is in equilibrium. true
Wednesday, February 14, 2007 at 3:30pm by KHNJ

Chemistry
I wanted to calculate the average equivalent weight of an unknown acid for an acid-base titration experiment. The mass of the unknown that I had to obtain is 0.2 g and the equivalents of the acid is .001046 L x N. But is this equation right? Does the equivalent mass equal to ...
Monday, March 5, 2012 at 2:40pm by Priscilla

CHEM HELP!!
If barium chromate is formed, it is a precipate, lemon yellow If barium dichromate is formed, is is soluble, and the solution is orange. Potassium chromate solution is yellow (slight red tinge) Now what is neat, is to add a few drops of acid to change the pH.
Monday, March 9, 2009 at 7:19pm by bobpursley

chemistry
the titration equation: Normality of KOH*volumeKOH=Normalityacid*volume acid 1*molarityKOH*volumeKOH=2*Ma*volume acid where Ma is the molaritiy of the acid. solve for Molarity of the acid.
Sunday, September 16, 2012 at 10:08pm by bobpursley

science
If boiling permanganate eliminates possible reducing agents in a solution, do I still need to do blank titration?
Thursday, February 5, 2009 at 6:22pm by aimee

Organic Chemistry
An impure sample contains 0.95g of benzoic acid and 0.05 of salicylic acid. Solubilities in water of the two compounds are given in the following table. Solubility at 20 degrees (g/10mL) benzoic acid: 0.029 salicylic acid: 0.22 Solubility at 100 degrees (g/10mL) benzoic acid: ...
Sunday, September 18, 2011 at 3:03pm by Anonymous

chemistry
The correct answer is d; i.e., both b and c. You look at the solubility as well as if the H^+ reacts with cation or anion to produce a weak acid. If so, then it is pH dependent. AgCl, for example, ==> Ag^+ + Cl^-. Adding H^+ might try to form HCl but that is not a weak acid...
Tuesday, July 27, 2010 at 4:56pm by DrBob222

Chemistry
A solution of potassium hydroxide is in equilibrium with an undissolved solute at 45 degrees Celsius. What will happen to the mass of the potassium hydroxide if the temperature is raised to 50 degrees Celsius? (Given that heat of solution is -57.6kJ/mol)Please explain as well.
Friday, December 14, 2012 at 12:59am by Dayton

Honors Chemistry
1c. I'm sure you meant to type in nitrous acid. 1e. Several sites listed this as peroxynitric acid, one listed the IUPAC name as hydroxynitrate, and one as pernitric acid. I think pernitric acid follows the "rules" you've been given. 1f. Several sites listed this as ...
Monday, May 7, 2012 at 12:15pm by DrBob222

Chemistry (Acids and Bases)
Concentration of NaOH: 0.09999 M Volume of NaOH: 3.25 mL # moles of NaOH: 0.325 moles Initial Concentration of Weak Acid: ? (How do we calculate this) There isn't enough information to work the problem here. (weak acid) = moles NaOH/volume weak acid used in the titration. All ...
Sunday, March 29, 2009 at 1:54pm by DrBob222

ionic or covalent
can you check for me? Calcium Chloride: covalent Citric Acid: ionic Phenyl Salicylate: covalent Potassium Iodide: ionic Sodium Chloride: covalent Sucrose: ionic Thanks so much!!!! You must have some reason for picking ionic or covalent. How did you arrive at your answers? Look...
Monday, June 19, 2006 at 1:26pm by Hodgkin

Chemistry
Which of the following is an example of a physical change ? A) Zinc metal is added to hydrochloric acid and a gas is released. B) Concentrated hydrochloric acid is diluted with water. C) Acid rain causes the decomposition of a marble statue. D) Hydrochloric acid is neutralized...
Thursday, December 30, 2010 at 5:35pm by Anonymous

chmistry
I.e. a testable hypothesis, not necessarily accurate, describing why white sugar may not be an effective substitute for brown sugar. Example full credit answer: "Cookies made without brown sugar fail to rise because the brown sugar contributes acid, which reacts with the ...
Wednesday, November 13, 2013 at 7:23pm by Bobmeister

Chemistry
Equal moles of nitric acid (HNO3) and formic acid (HCOOH) were each dissolved in equal volumes of water. State and explain which of the resulting solutions would have the higher pH. Your answer should include an explanation of the terms strong acid and weak acid and a ...
Thursday, May 16, 2013 at 4:58pm by Ez

Chemistry
I don't believe formic acid has a pK3. You must mean pKa. a. pH = pKa + log (base)/(acid) Since base = acid then base/acid = 1; log 1 is zero and pH = pKa. b. Use the Henderson-Hasselbalch equation above and substitute for base and acid then calculate pH.
Tuesday, April 30, 2013 at 1:50pm by DrBob222

Chemistry
For a), calculate moles HCl (Moles = M x L) and see which is in excess. Since both HCl and NaOH are strong electrolytes, their molarity will be the H^+ (or OH^- if NaOH is in excess) and pH can be determined from that. For b), it is more complicated than that. Acetic acid and ...
Tuesday, August 11, 2009 at 7:28pm by DrBob222

Organic Chemistry
Cyanic acid is HOCN. The compound has the structure H-O-CN. It is isomeric with another acid, H-N=C=O, which is known as isocyanic acid. When you deprotonate cyanic acid the anion is: (-)O-CN <-> O=C=N(-) I can't show the arrows on here to move the electron along the...
Monday, September 6, 2010 at 10:24pm by Dr Russ

Chen=mistry
Sodium metal reacts violently with water to form NaOH and release hydrogen gas. Suppose that 3.00 g of Na reacts completely with 3.00 L of water and the final volume of the system is 3 L. What is the molarity M of the NaOH Solution formed by the reaction?
Wednesday, May 1, 2013 at 8:44am by Janet

CHemistry
a capsule of vitamin C.. a weak acid, is analyzed by titrating it with 0.425 M sodium hydroxide. it is found that 6.20 Ml of base is required to react with capsule weighing 0.628 g. what is the percentage of vitamin C (C6H8O6) in the capsule?( one mole of vitamin C reacts with...
Wednesday, October 22, 2008 at 10:17pm by Komal

Science
Which of the following is a nonelectrolyte? a) C3 H8 (propane gas) b) H2 SO (sulfuric acid) c) HCL (hydrochloric acid) d) HNO 3 (nitric acid) e) NaCL (table salt)
Thursday, May 1, 2008 at 10:16am by Nathaly

orgenic chemistry
why is the reaction mixture(isopentyl acid, glacial acetic acid,concentrated ssulfuric acid) extracted with sodium bicarbonate?give an equation and explain its relevance
Wednesday, November 11, 2009 at 8:53pm by priya

orgenic chemistry
why is the reaction mixture(isopentyl acid, glacial acetic acid,concentrated ssulfuric acid) extracted with sodium bicarbonate?give an equation and explain its relevance
Wednesday, November 11, 2009 at 8:55pm by priya

Chemistry
Predict and balance the following organic reactions. 1. Ethanol(ethyl alcohol) and methanoic acid(formic acid) are mixed and warmed. 2. Ethanoic acid is combined with propanol.
Friday, August 19, 2011 at 5:30pm by Summer

chemistry
A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.
Wednesday, March 21, 2012 at 3:24pm by blair

chemistry
A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.
Wednesday, March 21, 2012 at 7:35pm by blair

Physics
A)What mass of silver chloride can be produced from 1.33 of a 0.207 solution of silver nitrate? I got this one, its 39.4 g B)The reaction described in Part A required 3.28 of potassium chloride. What is the concentration of this potassium chloride solution? I keep getting 0.08...
Friday, October 14, 2011 at 9:14pm by Kristi

Chemistry
A)What mass of silver chloride can be produced from 1.33 of a 0.207 solution of silver nitrate? I got this one, its 39.4 g B)The reaction described in Part A required 3.28 of potassium chloride. What is the concentration of this potassium chloride solution? I keep getting 0.08...
Friday, October 14, 2011 at 9:15pm by Kristi

chemistry
Buffers work because of the way they are constructed. Buffers consist of a weak acid and a salt of the weak acid. For example, HF for the weak acid and NaF as the salt. When a strong acid, such as HCl, is added, the multiple H^+ are used up by the salt to form more of the weak...
Friday, May 4, 2012 at 5:14pm by DrBob222

chem-acid-base titrations
Acetic acid (HC2H3O2) is an important component of vinegar. A 10.00mL sample of vinegar is titrated with .5052 M NaOH, and 16.88 mL are required to neutralize the acetic acid that is present. a.write a balanced equation for this neutralization reaction b.what is the molarity ...
Monday, April 21, 2008 at 10:06pm by natash

grammar check? idk
does this make sense? Fertilizers are combinations of nutrients that plants need to grow. The primary nutrients of fertilizers are three different elements which are nitrogen, phosphorus, and potassium. These elements are often combined into a NPK blend. Phosphorus in the ...
Thursday, March 20, 2014 at 10:59pm by anonymous

chemistry help!
I have a chemistry test tomorrow and I'm trying to study but none of these questions in the book make sense to me:( Help! 1. Commericially available concentrated sulfuric acid is 95% H2SO4 by mass and has a density of 1.84g/mL. How many milliliters of this acid are needed to ...
Sunday, October 18, 2009 at 12:53pm by Maycee

chemistry
in 1807 the English chemist Humphrey Davy passed an electric current through molten potassium hydroxide and isolated a bright, shiny reactive substance. He claimed the discovery of a new element, which he names potassium. In those days, before the advent of modern instruments...
Saturday, May 21, 2011 at 3:40pm by kimberly

Chemistry
write and balance the equation. then figure the moles of potassium carbonate. Look at the mole ratio of KCl to potassium carbonate. Multipy the originalmoles of postassium carbonate by that ratio, and you have the moles of KCl. Convert that to grams.
Sunday, October 17, 2010 at 11:11am by bobpursley

Chemistry
MnO4^- + 2H2O + 3e ==>MnO2 + 4 OH^- is the half reaction for permanganate. Add in the Al. Let me know if you have trouble.
Thursday, September 6, 2007 at 6:31pm by DrBob222

Inorganic chemistry
write a balanced half-reaction for the reduction of permanganate ion, Mn04, to Mn02 in a basic solution
Saturday, April 11, 2009 at 9:15am by Steve

Chemistry
That's like asking why cheese is yellow? Permanganate is a good oxidizing agent because it is easily reduced but that hardly seems an answer to me.
Wednesday, March 23, 2011 at 4:55pm by DrBob222

chem-acid-base titrations
Assume that your vinegar contained a small amount of citric acid (a triprotic acid). Using the same experimental data, would you expect the molarity of this sample to be the same as or different than a sample which contained only pure acetic acid?
Monday, April 21, 2008 at 10:06pm by Mo

Chemistry
I there, this is my lab worksheet, I am having trouble filling it out. Please help me with it. Expt #1- Molecular Weight of Unknown Acid Unknown Acid: #3 Mass of Unknown solid acid transferred:1.0g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of...
Monday, October 4, 2010 at 10:17pm by Steve

ap biology
10 . Which one of the following statements is NOT true about the resting potential? (28.3) [Hint] A. The neuron's plasma membrane is much more permeable to potassium than to sodium. B. The concentration of sodium is much higher inside the cell than outside. C. The sodium-...
Thursday, November 6, 2008 at 4:37pm by carol

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