Number of results: 68,755
Chemistry Lab
A 15.00 mL sample of a weak acid with Ka = 3.52x10-4, was titrated with 0.475 M KOH. The equivalence point was reached after addition of 19.5 mL of KOH with the phenolphthalein indicator. Determine the molar concentration of the original acid solution, then find pH and a % ...
Tuesday, October 30, 2012 at 1:07pm by Erin Lee
chemistry
Run # Volume NaOH used (mL) 1 4.1 2 4.3 3 2.8 Concentraion of NaOH: 0.113 M pH of acid: 2.84 the questions are: #moles of NaOH: ? initial acid concentration: ? Determine the Ka and pka of the weak acid: ? So here is what I did: Shaked for several minutes about 1 g of the acid ...
Sunday, July 15, 2012 at 7:53pm by fenerbahce
Chemistry
A buffer containing 0.2832 M of acid, HA, and 0.1504 M of its conjugate base, A−, has a pH of 2.36. What is the pH after 0.0015 mol NaOH is added to 0.5000 L of this solution?
Friday, March 16, 2012 at 1:29pm by Tracey
chemistry
When a solution of 6M HCl is made from a stock of concentrated HCl by adding an equal volume of water, why is the concentration of the solution only an approximate concentration?
Sunday, July 25, 2010 at 2:41pm by Kathleen
science
the oxide formed when selenium burns in air dissolves in water to give a solution of selenious acid,H2SeO3.the solution conducts electricity and turns blue litmus paper identify the positively charged ion present in an aqueous solution of the acid and then using the answer ...
Friday, February 2, 2007 at 8:23am by hanny dunny
chemistry
write the formula of each acid and identify each as a diprotic, a triprotic, or a monoprotic acid sulfuric acid,perchloric acid,phosphoric acid,hydrofluoric acid,acetic acid
Saturday, May 14, 2011 at 5:13pm by courtney
Chemistry
calculate the grams of hydrochloric acid that must be diluted to a volume of 8 liters to produce a concentration of .25 moles
Thursday, September 4, 2008 at 8:36pm by felicia
Chemistry
What volume of 0.500 M hydrochloric acid is required to exactly neutralize 40.00 mL 0.150 M NaOH?
Sunday, March 18, 2012 at 7:46pm by Arianna
chemistry
Identify the conjugate base of the following acids? The names. For example HCl is hydrochloric acid. A) HSO4^- B)H3O^+
Sunday, December 4, 2011 at 10:31pm by Amanda
Chemistry
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3. Please explain how to do this.
Wednesday, September 28, 2011 at 9:33pm by Brittany
Chemistry
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3. Please explain how to do this.
Wednesday, September 28, 2011 at 7:33pm by Jackie
Chemistry
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3. Please explain how to do this.
Wednesday, September 28, 2011 at 3:53pm by Brittany
chemisrty
what voule of 12M hydrochloric acid must be diluted with distilled water to prepare 5.0L of 0.10M HCl?
Sunday, December 12, 2010 at 10:12pm by Cassie
TSU Chemistry
Which of the following reactions needs to be reversed to solve for the Heat of Neutralization between Hydrochloric Acid and Ammonia
Monday, March 29, 2010 at 12:17am by Pam
chemistry repost!!
Molarity is moles of solute (acetic acid) per liter of solution. I will call acetic acid X to save typing. [Moles X/liter solution] = [Moles X/Moles H2O]x [Moles H2O/liter] =[Moles X/Moles H2O]x[MolesH2O/g H2O][gH2O/g solution][g solution/liter] =(.325/.675)(1/18)MolesX/g/H2O[...
Saturday, November 10, 2007 at 9:14am by drwls
Chemistry
Arsenic acid has the formula H^3AsO^4. It is a triprotic acid. Abottle is marked 0.422 N arsenic acid. What is the Molarity of this solution?
Saturday, April 27, 2013 at 9:47pm by naomi
Chemistry
Boric acid is a weak acid with an equilibruim constant(K)of 10-9.3. What is the pH balance of a 0.1 molar solution of boric acid?
Monday, October 8, 2012 at 12:01pm by Kenneth
chemistry
A 0.185 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (Ka) for the acid.
Tuesday, April 24, 2012 at 7:35pm by cindy
chemistry
Suppose you were asked to determine the exact acetic acid concentration in an acetic acid solution that was about 50% acid?
Thursday, November 4, 2010 at 2:33pm by Myisha
Biochemistry
HELP!! Describe how to prepare 800 ml of a 0.100 M potassium acetate buffer, pH = 4.46 (n.b. pKacetic acid = 4.76). You have glacial acetic acid (17.6 M), a 1.000 M solution of KOH and a 1.000 M solution of HCl.
Sunday, December 18, 2011 at 10:40am by Jerrica
organic chemistry
A solution of acetic acid (CH3COOH; Ka = 1.74 x 10-5) was titrated to a final pH of 4.76 by using NaOH solution. What % of acetic acid is converted to sodium acetate (CH3COO-Na+)? Show your method
Sunday, September 12, 2010 at 3:51pm by brittany
chemistry
formic acid is a monoprotic acid with a ka at ml solutionof m of formic acid solution is titrated with m naoh what is the ph at the equivalence point
Tuesday, March 29, 2011 at 8:07pm by Omar
Chemistry
Given a 2.5 kg solution of phosphoric acid and water (56 % phophoric acid, by mass), calculate the number of moles of phosphoric acid.
Monday, October 18, 2010 at 4:10pm by Emily
chem lab
In a pottasium permanganate and oxalic acid titration..why do we add sulfuric acid to the oxalic acid solution and then boil it before titrating??
Monday, January 12, 2009 at 2:01pm by sylvia
Chemistry
which is more concentrated a 1 liter solution containing 30 g of NaCl or a 1 liter solution containing 30g of KCl
Monday, April 4, 2011 at 6:22pm by Raul
Chemistry
Calculate pH of a solution by mixing 15.0 mL of .50 M NaOH and 30.0 mL of .50 benzoic acid solution (benzoic acid is monoprotic, its dissociation constant is 6.5 x 10^ -5). I am not sure whether I am supposed to do it by acid-base titration way or to use the formula -log (Ka...
Tuesday, July 28, 2009 at 12:32am by Soojung
Chemistry
Expt #1- Molecular Weight of Unknown Acid Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of acid titrated with NaOH: 25.00 mL Average volume of Naoh from titration: 13.9 mL Here's ...
Sunday, October 10, 2010 at 6:48pm by Rayana
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
An acid buffer consists of a weak acid and its salt. If an acid is added to the solution the salt reacts with it to make more of the weak acid. If a base is added to it, the acid part neutralizes the base. A basic buffer works on the same principle.
Thursday, September 23, 2010 at 10:54pm by DrBob222
Chemistry
What is the molarity of a phosphoric acid solution if 32.3 mL of the phosphoric acid solution is titrated to the final equivalence point with 20.6 mL of 0.581 M sodium hydroxide acid solution? H3PO4 + 3NaOH ==> Na3PO4 + 3H2O mols NaOH = 0.0206L*0.581 M= ?? mols H3PO4 = ...
Sunday, February 11, 2007 at 5:38pm by Question
Chemistry
Hydrogen peroxide solution, H2O2(aq), is available with a concentration of 1.667mol/L. When diluted to a concentration of 0.25mol/L, the solution is used as a disinfectant. What volume of water should be added to 100 mL of the concentrated hydrogen peroxide solution to prepare...
Thursday, February 21, 2013 at 7:19pm by Lori
Chemistry
see same question how many grams nitric acid HNO3 must be dissolved in 350 ml water to make a solution with pH of 4.5"? or "how many ml of a 4.2M nitric acid solution are required to make 500 ml of solution with pH of 2.9
Sunday, May 12, 2013 at 11:29am by kriti
Chemistry
Calculate the molarity of Formic acid in a solution containing 44g of Formica acid in 470 g of nitrobenzene. The molar mass of Formica acid is 36g/mol
Friday, March 1, 2013 at 11:25am by Noga
chemistry
Lactic acid is a weak monoprotic acid. If a 0.10 M solution of it has a pH of 2.44, what is the dissociation constant (Ka) for lactic acid. I got 1.3x10^-4? Is that right?
Monday, October 3, 2011 at 5:46pm by person
Science 7
Yes. Your friend's tea is a more concentrated solution.
Friday, January 7, 2011 at 9:15pm by Ms. Sue
Chemistry
25.00 mL of a solution of oxalic acid are titrated with 0.2586 m NaOH (aq). The stoichiometric eend point is reached when 43.42 mL of the solution of base is added. What is the molarity of the oxalic acid solution? Oxalic acid reacts with sodium hydroxide as shown: H2C2O4(aq...
Saturday, December 1, 2012 at 10:13pm by ANONYMOUS
Grammar
No. There should be a semicolon after "concentrated." You could also reword it: Since the shampoo was concentrated, I only used a little bit.
Tuesday, October 2, 2012 at 9:06pm by Ms. Sue
CHEMISTRY
Assuming the density of a 5% acetic acid solution is 1.0 g/mL,determine the volume of the acetic acid solution necessary toneutralize 25.0 mL of 0.10M NaOH.
Wednesday, August 25, 2010 at 2:28pm by Jeffrey
Chemistry
You make 1.00 L of a buffered solution (pH = 5.10) by mixing propanoic acid and potassium propanoate. You have 1.00 M solutions of each component of the buffered solution. What volume of each solution do you mix to make such a buffered solution? propanoic acid potassium ...
Wednesday, March 13, 2013 at 2:53am by Margaret
chemistry
Zinc combines with hydrochloric acid to form aqueous zinc chloride and hydrogen gas. If 300.0 mL of a 0.150 M solution of HCl is allowed to react with excess zinc, how many moles of hydrogen gas would be produced? Part two: if this reaction happens at STP what ...
Tuesday, March 6, 2012 at 11:38pm by Anonymous
Science
Can you please tell me about what the difference between a dilute and a concentrated souloution is? Can you please tell the difference between a acid and a base? What are their similarities and their differences? How can we know when somehting is a acid and when something is a...
Saturday, November 22, 2008 at 6:06pm by Mary
chemistry
Benzoic acid and quinine are dissolved in a solution of dichloromethane. Besides the normal neutral forms for benzoic acid and quinine, will there be any other chemical form(s) present in the dichloromethane solution? (benzoic acid pKa = 4.2; quinine pKa = 8.5)
Sunday, August 22, 2010 at 7:07am by Kay
chemistry
Zinc + Hydrochloric acid --> Znic Chloride + Hydrogen Sodium hydroxide + sulfuric acid --> sodium sulfate +water Sodium + Hydrogen --> sodium hydride 2CH3COOH + Cu --> (CH3COOH)2Cu + H2
Sunday, December 5, 2010 at 10:12am by Pedro
Chemistry
Suppose you have 1 l of acid solution. With a pH of 2" , you add 1 l of pure water to it, wat happens to the pH of the solution? Explain! Is it correct if i state: the pH of the acid solution becomes neutral since pure water is neutral??
Thursday, February 21, 2013 at 10:54am by Jessie
Help --->Chemistry
1) Complete and balance the following chemical reactins: 2HCI(aq)+Pb(NO3)2(aq)---> 2HI(aq)+K2SO3(s)---> Pb(NO3)2(aq)+2KCI(aq)---> Ba(NO3)2(aq)+Na2SO4(aq)---> K2CO3(aq)+Ba(NO3)2(aq)---> HCI(aq)+AgNO3(aq)---> 2) How could you separate ...
Sunday, February 26, 2012 at 12:07am by melek
science
which of the following is used to measure 10.8cm3 of dilute hydrochloric acid? A.BURRETE B.BEAKER C.MEASURING CYLINDER D.PIPPETE
Thursday, May 16, 2013 at 8:01am by mathuravani
Chemistry
Mg +2HCL = MgCl2 +H2 what mass of hydrogen is obtained by adding excess hydrochloric acid to 6g of magnesium
Tuesday, September 25, 2012 at 3:46pm by Connor
chemistry
iF 50.0 g of iron (II) carbonate react completely with hydrochloric acid, how many grams of carbon dioxide gas may be produced?
Sunday, July 3, 2011 at 6:14pm by cHARLIE
chemistry urgent
The hydrogen generated in lab is a product of reaction between magnesium and hydrochloric acid. Which of these reacts was the limiting reactant?
Tuesday, November 30, 2010 at 1:14pm by hilda
chemistry
How many liters of CO2 form at STP if 5.0g of CaCO3 are treated with excess hydrochloric acid? show all your work
Friday, April 24, 2009 at 11:47pm by nichole
Algebra
How many milimiters of pure acid must be added to 150 milimiters of a 30% solution of acid to obtain a 40% solution? I know that the answer is 25 milileters. Could someone show me with steps how to get the answer.
Sunday, September 19, 2010 at 1:33pm by Mark
Chemistry
A solution of vinegar is 4.96% by mass acetic acid in water. Assume the density of the solution is 1g/mL. What is the pH? I have calculated the molar mass of acetic acid to be 60.5
Saturday, April 24, 2010 at 12:24am by Mike
science
In simple definitions, an acid produces hydrogen ion in solution and a base produces hydroxide ions in solution. An acid an a base neutralize each other, producing a salt plus water.
Sunday, December 14, 2008 at 6:20pm by DrBob222
AP Chemistry
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.036 moles of sulfuric acid is mixed with water to make 576 mililiter of solution, what is the molarity of H+?
Sunday, September 30, 2012 at 8:08pm by J. A
Chemistry
Acetic acid is a weak acid; sodium acetate is a salt of a weak acid. The combination makes a buffered solution. You calculate pH from the Henderson-Hasselbalch equation.
Sunday, June 12, 2011 at 11:01pm by DrBob222
Chemistry
0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 * 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 *10^-2 b. 5.0 * 10^-3 c. 2.5 * 10^-4 d. 2.5 * 10^-5 e. 2.5 * 10^-6 2. (Points: 1) What is the carbonate-ion, CO3^-2, ...
Thursday, May 13, 2010 at 5:26pm by wite2khin
Chemistry
A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 ´ 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 ´ 10^-2 b. 5.0 ´ 10^-3 c. 2.5 ´ 10^-4 d. 2.5 ´ 10^-5 e. 2.5 ´ 10^-6 2. (Points: 1) ...
Thursday, May 13, 2010 at 7:34am by write2khin
chemistry
acetic acid: 0.1 M 30ml hydrochloric acid 0.1 M 5 ml sodium hydroxide 0.1 M 15 ml Buffer + 5ml of: 1.91 ph ph (measured): 4:52 ph HOW DO I CALCULATE PH(CALCULATED)? AND ALSO IT SAYS SHOW YOUR CALCULATION FOR THE PH OF THE BUFFER BEFIRE AND AFTER THE ADDITION OF HCL? COULD YOU ...
Saturday, July 14, 2012 at 6:28pm by fenerbahce
chemistry
A 1.2431 -g alloy sample was analyzed for its copper content iodometrically. The alloy was dissolved in hot, concentrated nitric acid and prepared for analysis. The addition of excess KI(aq) solution precipitated the copper as cuprous iodide and liberated elemental iodine ...
Monday, April 4, 2011 at 6:51pm by tara
College Chemistry
A student weighs out 0.568 g of KHP (molar mass=204g/mol) and titrates to the equivalence point with (36.78 cm cubed which is 3) of a stock NaOH solution. What is concentration of stock NaOH solution? KHP is an acid with one acidic proton. The word cubed is in word form ...
Friday, October 22, 2010 at 12:05am by Elleni
Chemistry
How many moles are in the solution you want to prepare? M x L = moles. So you must add that many moles of the more concentrated solution. L x M = moles again. You know M and you know moles (from the first calculation), solve for L.
Tuesday, September 1, 2009 at 9:48pm by DrBob222
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) <>...
Tuesday, March 24, 2009 at 12:18pm by Sandra
CHM
Assuming the density of acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0 mL of 0.10 M NaOH. Record this calculation on your report sheet
Tuesday, January 25, 2011 at 1:47pm by JACK
chemistry
Assuming the density of a 5% acetic acid solution is 1.0 g/mL, determine the volume of the acetic acid solution necessary to neutralize 25.0 mL of 0.10 M NaOH. Record this calculation on your report sheet.
Tuesday, June 29, 2010 at 12:10pm by love
Chemistry
1. As I understand it--As an acid is added to neutral water the (OH-) will...decrease?? Is this right? 2. If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 L of distilled water, what would be the concentration of the OH-?...I think this would be a pOH...
Tuesday, May 15, 2012 at 12:31pm by April
chem
what is a liquid solution and a gaseous solution? Do you intend to ask us to name a liquid solution and a gaseous solution. One example of a liquid solution is vinegar. It is acetic acid in water. That is a solution of two liquids. An example of a gaseous solution is air. ...
Monday, May 14, 2007 at 10:25pm by revie
chemistry
Elemental zinc will react with acid to evolve hydrogen gas. This is a redox reaction. Write a balanced molecular equation for the reaction of zinc and hydrochloric acid, showing the coefficents and the phases of all reactants and products. Below is an example of the form of ...
Wednesday, January 16, 2013 at 2:20pm by simon
college chemistry
so i've never used this litmus paper stuff & i totally missed the lab but i still have to answer this question. ** Describe the observation obtained when a piece of litmus paper is immersed in the mixture of two acids? ** These two acids it's talking about are ...
Friday, June 17, 2011 at 1:57pm by Kalli
chemictry
how many gramms are in barium carbonate with 200g and 7.3% of hydrochloric solution
Thursday, May 16, 2013 at 5:53am by cynthia
Chemistry/pH- Weak Acid
The Rule of 5% may be reasonable but arbitrary. I have not seen it in any textbook I use. If the approximate solution is not satisfactory solve the quadratic equation: Ka = x^2 / (c-x) with he proper values for the Ka and c (the overall acid concentration). That is tedious ...
Monday, August 18, 2008 at 9:24am by GK
Chemistry (URGENT)
The absorbacne of 0.20 corresconds top the concentrated sample. Step one - Using calibration graph: 0.20 absorbance = 0.05M -OK so the concentration in the original solution is 0.05 M/100=0.0005 M (the sample was concentrated by a factor of 100) Step three - 0.0005 mol x 58.9g...
Thursday, December 16, 2010 at 1:35am by Dr Russ
Chemistry
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.240 M sodium benzoate. How much of each solution should be mixed to prepare this buffer?
Thursday, March 29, 2012 at 2:28pm by Jematormal91
Chemistry
Sulfuric acid (H2SO4) is a very diprotic acid. If 0.046 moles of sulfuric acid is mixed with water to make 638 mililiter of solution,what is the molarity of H+? Answer in units of M.
Thursday, September 23, 2010 at 8:36pm by Cheyenne
Food Chemistry
Calculate the amounts and pH values for preparing the following acetic acid/acetate buffer solution. 1.) In the first step, If you plan to prepare a 2.00 M sodium acetate in 200.0 mL distilled water, how many grams of sodium acetate should be added in water? 2.) B. In the 2nd ...
Thursday, April 29, 2010 at 10:34am by Lauren
Chemistry
When I solve for b/a it equal 0.17, but I'm supposed to find how much more acetic acid should be in the solution.. How do I do that?
Thursday, March 29, 2012 at 2:26pm by Jematormal91
chemistry
In acid solution the balance is made with H^+ and H2O. In basic solution the balance is made with OH^- and H2O. However, none of this makes much difference since there are several schemes that work and this is just a form to follow to balance those tough redox equations. One ...
Thursday, June 7, 2012 at 6:46pm by DrBob222
college-chemistry
2. A 0.1967 g sample of pure ascorbic acid is weighed out and dissolved in 50.0 mL of distilled water in an Erlenmeyer flask. One week later, when about one third of the water in the flask has evaporated, this solution is titrated against 0.01735 M KIO3 solution and requires ...
Sunday, November 15, 2009 at 11:43pm by john
College Chemistry
A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is titrated with 39.00 mL of 0.0958 M NaOH to the equivalence point. A.) What is the pH of the acid solution, before any base is added to it? B.) What is the pH of the acid solution after exactly 19.50 mL of NaOH is added?
Tuesday, April 13, 2010 at 1:11am by Shell
Chemistry
the hydronium ion concentration of a 0.050 M solution of a weak acid is 5.9 X 10^-3 M. the acid-dissociation constant is 1.37 X 10^-4 at 25 celsius. what is the pH of this solution? A. 0.077 B. 1.30 C. 2.23 D. 3.86 E. 5.13
Monday, March 18, 2013 at 11:01pm by Chemistry
Chemistry
When sulfuric acid reacts with ammonia solution an ammonium salt and water are produced. Calculate the volume of 3mol/dm3 of acid required to react exactly with 25ml of a 2.5mol/dm3 of ammonia solution.
Tuesday, June 5, 2012 at 3:29am by Jeconiah
CHEMISTRY HELP!
(1) A beaker with 165 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of the acid and conjugate base in the buffer is 0.100M. A student adds 7.20mL of a 0.320M HCl solution to the beaker. How much will the pH change? The pka of ...
Monday, July 13, 2009 at 7:49pm by Ashley
science
6g of impure NaOH was dissolved in 100ml of a solution.0.25molar solution of the base utilize 27.6ml of the solution containing 6g of trioxonitrate(5)acid.calculate (a)molar concentration of acid (b) molar concentration of base (c) mass of the base (d) % purity of the base
Saturday, January 19, 2013 at 2:15am by chm 101
Math college algebra
how many gallons of a 10% alcohol solution be mixed with 20 gallons of a 10% acid solution to obtain an 8% acid solution? This is college algebra not chemistry
Sunday, May 30, 2010 at 11:14pm by krystal
science
C3H8 is propane. That is a non-electrolyte. All the others are electrolytes; i.e., H2SO4 -sulfuric acid HCl --The solution is an electrolyte. The dry compound minus water is a non-electrolyte HNO3--nitric acid. NaCl (solution) is an electrolyte in the molten state or in ...
Friday, October 5, 2007 at 7:34pm by DrBob222
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 ...
Sunday, October 18, 2009 at 12:53pm by Maycee
chemistry
moles = M x L. Frankly, I've never heard of a solution that is as concentrated as 872 M.
Wednesday, October 19, 2011 at 7:32pm by DrBob222
1st grade math
If you are doing it for addition/subtraction it could be: 6 + ? = 9 ? + 6 = 9 9 - 6 = ? 9 - ? = 6 4 + ? = 9 ? + 4 = 9 9 - 4 = ? 9 - ? = 4 For multiplication/division, it could be: 4 * 9 = 36 9 * 4 = 36 36/4 = 9 36/9 = 4 I hope this helps. 6 * 6 = 36 36/6 = 6
Tuesday, January 19, 2010 at 9:09pm by PsyDAG
chemistry
A solution of HCI has a density of 1.18 g/ml and is 36% (m/m). what is the molarity and molality of this solution? Assume 100g solution. Then the solute is 36 grams. Figure the moles for that. Then, you know density, so you can compute volume (100g/density) Molarity= moles ...
Thursday, March 15, 2007 at 1:14am by nancy
Living environment(please check thank YOU Ms.Sue)
Cause: When hydrochloric acid backs up into the esophagus Effect: called Acid Reflux Cause: As a result of the acidic ph in the stomach Effect: help break down food Cause: As the epigolottis covers the larynx, Effect: I NEED HELP WITH THIS Cause: when reverse peristalsis ...
Wednesday, March 14, 2012 at 5:26pm by Anna
chem
You write the two equations for what goes on in the buffer solution. F^- + H^+ ==> HF So when you add acid (HCl), you decrease the F^- moles and you increase the HF moles. So for final base it is what you had initially - moles H^+ added. For final acid, it is what you ...
Monday, March 1, 2010 at 11:37pm by DrBob222
Chemistry
A 15.5 mL sample of 0.215 M KOH solution requires 21.2 mL of acetic acid in a titration experiment. Calculate the molarity of the acetic acid solution. Please show all steps, I don't understand this.
Monday, May 23, 2011 at 5:51pm by Tina
chemistry
assuming the density of a 5% acetic acid solution is 1.0g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of 0.10 m NaOH. also record this calculation on your report sheet.
Thursday, October 22, 2009 at 10:18am by janvi
chemistry
What is the difference between the two strong acids, nitric and hydrochloric acid, when they behave as the oxidised forms in a reduction half-equation?
Monday, May 6, 2013 at 8:24am by alex
Organic Chemistry
What is the mechanism of action between sodium benzoate (NaC6H5COO) and hydrochloric acid (HCl)? I need to know where the electrons go in this reaction.
Tuesday, October 11, 2011 at 11:01pm by BOB
Chemistry
how could you maximize the rate of reaction of magnesium and hydrochloric acid other than concentration and surface area techniques.tell a experiment in short.
Thursday, April 14, 2011 at 9:29am by Anjan
Chemistry
what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!
Thursday, January 27, 2011 at 7:24pm by paul
Chemistry
what volume of 1.015mol/L magnesium hydroxide is needed to neutralize 40.0mL of 1.60mol/L hydrochloric acid. Can you work it out please? Thanks!
Thursday, January 27, 2011 at 7:24pm by paul
Chemistry
How many liters of hydrogen at STP can be produced by the reaction of 4.15 g of zinc with hydrochloric acid: Zn + 2HCl -> ZnCl2 + H2
Monday, November 9, 2009 at 6:48pm by Julie
Chemistry
How many liters of hydrogen at STP can be produced by the reaction of 4.15 g of zinc with hydrochloric acid: Zn + 2HCl -> ZnCl2 + H2
Monday, November 9, 2009 at 4:01pm by Christina
Chemistry
Zn+ 2HCl -> ZnCL2+h2 what volume of hydrogen at stp is produced when 2.5 of zinc react with an excess of hydrochloric acid
Monday, October 1, 2007 at 8:58pm by Tyneice
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