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July 30, 2014

Search: A solution of sodium hydroxide is standard-

Number of results: 26,562

chemistry
in the reaction between sodium and water, hydrogen gas is given off and sodium hydroxide is formed. The gas is collected and there is found to be 1.8 moles of hydrogen. a) what mass of sodium would have been used in the reaction?
May 1, 2011 by Anonymous

Chemistry
A volume of 40.0 of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 20.2 of 1.50M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)--->K2SO4(aq)+2H2O(l)
July 22, 2012 by Lindsey

chemistry
what is the principle behind this test?add 5 drops of 10% sodium hydroxide and 1 drop of 0.5% copper sulfate to 5 drops of liver of pig in a sucrose solution?
December 12, 2010 by Anonymous

Chemistry
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water?
January 24, 2013 by Lucy

Chemistry
Determine the molarity of a sodium hydroxide solution? if 37.34 mL of it are required to neutralize 1.922 g of citric acid. balanced equation- 3NaOH(aq)+H3C6H5O7-->3H2O(l)+NaC6H5O7(aq ***Plesae show steps.
March 7, 2012 by Cynthia

CHEMISTRY
A FALSK CONTAINS 49.8 mL OF 0.150 CALCIUM HYDROXIDE. HOW MANY MILLILITERS OF 0.500 SODIUM CARBONATE ARE REQUIRED TO REACT COMPLETELY WITH THE CALCIUM HYDROXIDE IN THE FOLLOWING REACTION? Na2CO3(aq)+ Ca(OH)2(aq)CaCO3(s)+2NaOH(aq)
October 23, 2012 by HAMZA

Help in Chemistry!!
You are given an aqueous solution of hydrofluoric acid. (Recall that hydrofluoric acid is a weak acid; When you are given an aqueous solution of a weak acid you always assume that the dissociation reaction of the acid in water has reached equilibrium) Predict whether the ...
November 26, 2011 by Mary

chemistry
how do I write this equatio out and is it stoichiometry problem. Find the mass of sodium hydroxide needed to neutralize enough nitric acid to create 2.0 gram of sodium nitrate?
November 30, 2010 by Tosha

Math
A chemist working on a flu vaccine needs to mix a 10% sodium-iodine solution with a 60% sodium-iodine solution to obtain a 50-milliliter mixture. Write the amount of sodium iodine in the mixture, S, in milliliters, as a function of the number of milliliters of the 10% solution...
September 6, 2008 by Anonymous

Chemistry 1
Sodium carbonate reacts with a solution of HCl solution with the evolution of gas (CO2) to yield a solution that is neutral. If 0.265 grams of sodium carbonate are required to neutralize 1.00 mL of HCl solution, what mass (in grams) of sodium carbonate will be required to ...
February 5, 2010 by Kay

Chemistry
A volume of 70.0mL of aqueous potassium hydroxide(KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 19.2mL of 1.50M H2SO4 was needed? The equation is 2KOH+H2SO4->K2SO4+2H20
September 18, 2010 by Peter

dr bob HELP PLEASE
thanks dr Bob got thru 6 now I am stuck again 1. Hydrochloric acid + Sodium hydroxide > sodium chloride + water 2. Magnesium hydroxide + hydrochloric acid > Magnesium chloride + water
December 13, 2007 by sam

Chemistry-iodometric titration
In an iodometric titration, excess potassium iodide solution (KI) is added to the sample.Analyte such as chlorine liberates iodine from KI under acidic condition. Liberated iodine is titrated against standard sodium thiosulphate. The concentration of analyte in the sample is ...
August 4, 2010 by angela

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
September 6, 2011 by chemistry

science
the teacher instructed three students A,B,and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). 'A' dissolved 50 g of NaOH in 100 ml of water B dissolved 50g of NaOH in 100g of water while C dissolved 50g of NaOH in water to make 100ml of ...
September 6, 2011 by irsha

Organic Chemistry
1. Why is diethyl ether a good choice for an organic solvent? 2. Why doesnt the neutral organic compound dissolve in 1.5 M sodium hydroxide solution?
November 4, 2008 by Dora

chemistry
What mass, in grams, of sodium hydroxide (NaOH) is produced if 20 grams of sodium metal(Na) reacts with excess water?
April 20, 2010 by Anonymous

Chemistry
A student reacts 20.0 grams of sodium hydroxide with hydrochloric acid and obtains 25.0 grams of sodium chloride. What is the percent yield?
April 3, 2011 by Lisa

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
October 12, 2011 by Anonymous

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
October 12, 2011 by Anonymous

CHEM:
caluclate the volume in mL of 1.74 grams of sodium chloride from a 0.270 M solution 1.74g sodium chloride from a 0.270 M solution 7.10g ethonal from a 2.45 M solution 6.90g acetic acid (CH3COOH) from 0.606 M solution
June 9, 2012 by April

chemistry
If you wanted to hydrolyze 1 mole of PLA into 1 mole of sodium lactic acid, how many moles of sodium hydroxide would you need?
February 22, 2011 by meg

chemistry
calculate the molarity of an acetic acid solution if 83.71 mL of the solutions needed to neutralize103 mL of 1.08 M sodium hydroxide. the equation for the reaction is. HC2H3O2(aq) + NaOH(aq) >Na+(aq) + C2H3)2(aq) +H2O(aq) Please show your work i really don't understand what...
April 30, 2012 by Randy

Chemistry
One mole of each of the following compounds is added to water in separate flasks to make 1.0 L of solution. Which solution has the largest total ion concentration? a. aluminum hydroxide b. silver chloride c. sodium chloride d. calcium carbonate e. potassium phosphate I just ...
May 9, 2011 by Sam

Chemisty
Calculate the mass of water in grams that could be produced from the reaction of 10.00mL 0.4122M hydrochloric acid and 35.00mL 0.1738M sodium hydroxide solution. Identify the limiting reactant.
February 28, 2012 by Missy

chemistry
H2SO4(aq) + NaOH(aq)-> Na2SO4(aq) + H2O(l) Consider the unbalanced equation above. What is the concentration of the original sulfuric acid solution if 60.5 mL of the acid reacts with 18.0 mL of 0.110 M sodium hydroxide?
March 12, 2012 by jade

Chemistry
I have to sort compounds into groups, separating them by if they are acidic, Ionic, or Covalent. Heres the list: Calcium Carbonate Sodium Hypochlorite Sodium Chloride Sodium Hydrogen Carbonate Acetic Acid Ammonium Hydroxide Silicon dioxide Magnesium Sulfate Carbon Dioxide ...
December 10, 2012 by Kaylee

Science
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
September 17, 2009 by Lauren

ap
A ruptured tank in Anywhere, USA, spilled hydrochloric acid. Officials were reported to be concerned that the acid might mix with sodium hydroxide (caustic soda) in a neigh- boring tank and form a toxic gas. What toxic gas would be formed by mixing hydrochloric acid with ...
October 1, 2012 by cheri

chemistry
predict the outcome of mixing aqueous solutions of the following reactions. write the ionic equations of each. mercury (ll) nitrate + ammonium iodide manganese (ll) chloride + sodium sulfide lead (ll) nitrate + sodium sulfate barium nitrate + lithium sulfate aluminum sulfate...
October 3, 2011 by TROUBLED

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...
December 1, 2012 by ANONYMOUS

science
A test solution of sodium acetate is to contain 10 mg/ml of the metal ion. if 750 ml of the solution is needed, how many grams of sodium acetate must be used? What is the molarity of this solution?
April 20, 2011 by Drez

chemistry
A student took 100 mL of a solution of Mg(OH)2 and reacted it with HCl (aq) to calculate the concentration of hydroxide ions in the solution. If 13.75 mL of 0.010M HCl was used to react with all of the OH- (aq) in the 100-mL solution, what was the concentration of hydroxide ...
October 3, 2013 by Donna

AP CHEMISTRY
1) Calculate the molarity of a solution of sodium hydroxide, NaOH,if 23.64 mL of this solution is needed to neutralize 0.5632g of potassium hydrogen phthalate. 2) It is found that 24.68 mL of 0.1165M NaOH is needed to titrate 0.2931 g of an unknown acid to the phenolphthalein ...
March 8, 2012 by HELP PLEASE

Chemistry
What is antacid? Why is sodium hydrogen carbonate an effective antacid but sodium hydroxide is not? Thx~
April 10, 2009 by Anonymous

CHEMISTRY
18cm^3 of 1.0M H2SO4 just reacted with 24cm^3 of 1.5M NaOH to form sodium sulfate & water. Calculate the amounts in moles of sulfuric acid & sodium hydroxide reacting & write an equation for the reaction.
October 12, 2013 by Janey

chemistry
Lead ii nitrate was added to a small test tube as well as Sodium hydroxide. What is the equilibrium equation for the reaction of lead ii ions and hydroxide ions?
March 31, 2011 by Keli

chemistry
The mole fraction of an aqueous solution of sodium dichromate is 0.367. Calculate the molarity (in mol/L) of the sodium dichromate solution, if the density of the solution is 1.42 g mL-1.
February 25, 2011 by Colin

Chemistry
What is the sodium concentration when a solution is formed by mixing 60.0 ml of 0.150 M sodium carbonate with 75.0 ml of 0.225 M sodium bicarbonate?
October 14, 2013 by Chelsea

chemistry
what are the hydronium-ion and the hydroxide ion concentration of a solution at 25 C that is 0.0050 M strontium hydroxide, Sr(OH)2? a solution of hydrochloric acid is 0.20 M HCl. What is the hydronium-ion at 25 C? What is the hydroxide ion concentration at 25 C?
August 6, 2011 by Henry

chemistry
if one had one gallon of sodium hydroxide solution which had a concentration of four gallons of the acid?
June 23, 2010 by Ana

chemistry
A solution of sodium nitrate, NaNO3, in 200 g of water is saturated at 50C. If the solution is cooled to 20C, how many grams of sodium nitrate will precipitate from the solution?
September 13, 2010 by KSLE

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.
July 31, 2011 by BEE

Chemistry
A student actually used 0.847g sample of impure KHP and the endpoint was reached after 19.82 ml of sodium hydroxide solution was added, What is the percent KHP in the unknown to four significant figures.
August 1, 2011 by BEE

Chemistry- HW Check
I have seven homework problems. I did them but I wasn't sure if I did them correctly. Did I do them correct? Thank you! Give the reaction that describes how the hydrazine, N2H4(aq), / hydrazinium ion, N2H51+(aq), buffer reacts with a strong base such as sodium hydroxide. N2H4(...
November 15, 2011 by Maegan G

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.
February 19, 2012 by Amanda

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.
February 19, 2012 by Amanda

Chemistry
What will be the pH of an aqueous solution containing 0.040 mol/L sodium hydroxide?? I got 1.40 or 1.398 I rounded the numbers is my answer right??? If not what's the right answer??
December 23, 2010 by Tarkan

Biochemistry
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate the volume of hypochlorous acid and sodium hydroxide to use.
March 12, 2013 by Jen

Biochemistry
Explain how to prepare 1L of a buffer at pH 7.4 using 1M hypochlorous acid (Ka = 3.5 x 10-8) and a 1 M NaOH solution. Indicate the volume of hypochlorous acid and sodium hydroxide to use.
March 13, 2013 by Jen

Chemistry
Some solid copper(II) sulfate is dissolved in sufficient water to make 100.0 mL of solution. Enough of a sodium hydroxide solution of concentration 0.1500 mol/L is added just to react with all of the first solution, with none left over. This turns out to be a volume of 47.08 ...
February 22, 2011 by OLGA

pcc
A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l)
July 15, 2013 by jose

Chemistry
A volume of 80.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l)
February 24, 2014 by carley

Chemistry
The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?
June 3, 2011 by Kat

chemistry
A SOLUTION OF 0.05METER ACID PKA 6.10 IS MIXED WITH AN EQUAL VALUE 0.1 SODIUM SOLUTION OF SODIUM SALT WHAT IS THE PH OF THE FINAL MIXTURE.
March 30, 2010 by ronke

Chemistry
Will a double replacement reaction take place if a solution of sodium hyrdrogen carbonate is added to a solution of sodium chloride?
April 21, 2011 by Jes

Chemistry
a solution is 0.0300 m in Sodium. How many grams of sodium carbonate are necessary to prepare 900.0 ml of this solution? I don't know where to start on this.
September 28, 2012 by Alex

~Chem
Check my work please The solubility product of nickel (II) hydroxide at 25C is 1.6 x 10-16. Calculate the molar solubility of nickel (II) hydroxide in 0.100 M sodium hydroxide. Ni(OH)2 <=> Ni2+ + 2OH I = Ni2+ is 0 & 2OH is 0.1 Change = Ni2+ is X and 2OH- is 2x Equili...
May 14, 2007 by Mel

Chem
a solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.054 g; buret reading before tiltration 0.33 mL; buret reading after ...
July 13, 2010 by debbie

AP Chemistry
A solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.234 g; buret reading before titration 0.23 mL; buret reading after ...
September 14, 2011 by Chandler

CHEMISTRY
a solution of sodium hydroxide is standardized against potassium hydrogen phthalate (KHP, formula weight 204.2 g/mol). From the following data, calculate the molarity of the NaOH solution: mass of KHP 1.404 g; buret reading before titration 0.13 mL; buret reading after ...
October 18, 2013 by maria

chemistry
why is the osmotic pressure of 10 mole solution sodium chloride larger than that of sodium nitrate solution
May 24, 2010 by taher

General Chemistry
"How would you prepare 150. mL of 0.1M sodium hydroxide given a stock solution of 3.0M NaOH?" I made calculations and figured the process would be to dilute 5 mL of the 3.0M NaOH to 150. mL. Is this correct? For the ideal 150. mL of 0.1M NaOH, I calculated there to need .015 ...
April 21, 2013 by Emily

science
Will you please check a few more? Physical change, chemical change or both kinds of change? 1. Sodium hydroxide dissolves in water (both) 2. Hydrochloric acid reacts with sodium hydroxide to produce a salt, water and heat (chemical) 3. A pellet of sodium is sliced in two (...
September 12, 2012 by Reed

organic chemistry
when i add methyl salicylate to aqueous sodium hydroxide, immediately a white solid forms... that is sodium salicylate is it?? Since it hasn't been heating under reflux yet.
March 18, 2013 by Anonymous

Science -- same q, dont reply if you dont know!
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
September 17, 2009 by Lauren

chemistry
Predict the the product for the following reactions. zinc + hydrochloric acid sulfuric acid + sodium hydroxide sodium + hydrogen acetic acid + coppper
December 5, 2010 by Amanda

Chemistry
A 205 mg sample of a diprotic acid is dissolved in enough water to make 250.0 ml of solution. The pH of this solution is 2.15. A saturated solution of calcium hydroxide (Ksp= 1.3 x 10-6) is prepared by adding excess calcium hydroxide to water and then removing the undissolved ...
February 25, 2013 by Summer

chemistry
The molarity of an aqueous solution of barium hydroxide is determined by titration against a 0.335 M nitric acid solution. If 32.8 mL of the base are required to neutralize 21.5 mL of nitric acid, what is the molarity of the barium hydroxide solution?
April 1, 2014 by Anonymous

Chemistry
When a 5.50g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee cup calorimeter, the temperature of rises from 21.6 degrees C to 37.8 degrees C. Calculate Change of heat for the reaction in kJ (also in kJ/mol NaOH) for the solution process. Assume the ...
October 10, 2011 by Jennifer

chemistry
sodium metal dissolves im liquid mercury to form of NA(s) and Hg(l) are 0.97 g/ml and 13.6 g/ml respectively. a sodium amalgoum is made by dissolving 10 ml Na (s) in 20.0 ml Hg (l). The final volume of solution is 21.0 ml. Calculate the molarity of Na in the solution.
January 31, 2013 by masharat

Chemistry
How do you calculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an aqueous solution of ammonium nitrate, NH4NO3, at 25 degrees C? The complete ionic equation is: Ba2+(aq) + 2OH-(aq) + 2NH4+(aq) + 2NO3-(aq) ---> ...
April 2, 2013 by Lisa

Chem
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 3.00 g of silver nitrate. How many grams of each of the following compounds are...
September 16, 2012 by Ezra

Chemistry
Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question, please read below. Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would ...
October 15, 2010 by Dexter

science
why potassium stock with 10000mg/L is added to the sodium standard solution with 20mg/L during the preparation for aas?
July 27, 2011 by saymyname

Chemistry
The Ksp for a certain metal hydroxide, M(OH)2 (molar mass = 127) is 3.5 10-19. What is the pH for a saturated solution of this hydroxide? Confused on how to set up this problem...
April 3, 2011 by Dan

chemistry
) A chemist dissolves 1.000 x 103 g of potassium hydroxide in enough water to make 1.5 L of stock solution. The chemist later wants 2.00 x 102 mL of 0.10 M potassium hydroxide. How much stock solution does the chemist need in order to make this second solution?
May 28, 2014 by Anonymous

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 = 1/3...
February 11, 2007 by Question

Physical Chem
A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred to another flask and diluted to 200.0 ...
May 27, 2010 by Sara

Organic Chemistry
What is the white solid that quickly forms when the methyl salicylate is added to the sodium hydroxide solution? I know that it is this equation but I wanted to know what is the name of the white solid: HOC6H4COOCH3 + NaOH HOC6H4COO- Na+ + CH3OH
April 3, 2010 by Jonathan

chemistry
ihave two solutions. in the first solution , 1.0 moles of sodium chloride is disslved to make 1.0 liters of solution . in the second one, 1.0 moles of sodium chlorine is added to 1.0 liters of water.is the molarity of each solution the same?
February 13, 2012 by wendy

Chemistry
The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution? For the answer I got [AlOH] <=> [Al] [OH]^2 5.6e-17 x 3x 5.6e-17 = 3x^4 x = 6.6e-5 Is this right? I'm not sure about 3x^4 part...
June 5, 2011 by Kat

Chemistry
20 ml of 0.1 M acetic acid was mixed with 25 ml of 0.1 M Sodium Acetate. The pH was measured to be 4.43. 5 ml of 0.1 M Sodium Hydroxide was added to the buffer and the pH was measured to be 4.60. Calculate the pH of the buffer before and after the addition of NaOH.
March 25, 2013 by Annie

science
what is the concentration of hydrogen ion in a 0.1M solution of sodium hydroxide(NaOH)? NaOH dissolves and completely dissociates in H2O to form the ions. NaOH ==> Na^+ + OH^- Therefore, starting with 0.1 M NaOH will give you 0.1 M in Na^+ and 0.1 M in OH^-. You know Kw=(H...
December 31, 2006 by michelle

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
October 20, 2011 by patel

math
a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
October 20, 2011 by patel

Chemistry
A sodium selective electrode indicates a 34.2 mV response to a 2.50 x 10-4 M Na+ standard solution. Assuming ideal electrode response, what is the sodium concentration of a sample when the electrode indicates a 35.2 mV response?
August 12, 2013 by RC

chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3) and sodium hydroxide...
July 20, 2011 by David

chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3) and sodium hydroxide...
July 20, 2011 by David

General Chemistry
When a solution of nickel (II) chloride is mixed with a stoichiometric amount of colorless sodium hydroxide solution, a green, gelatinous precipitate forms. (a) Write the balanced molecular equation and the net-ionic equation for this reaction. molecular: Ni(Cl)2 (aq) + NaOH (...
July 16, 2013 by <3

Chemistry
Yesterday we combined Hydrochloric Acid HCl with Sodium Hydroxide NaOH in a violent reaction that resulted in water H2O and common table salt NaCl. How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to...
June 19, 2014 by Sally

chemistry
A student takes 26.0 grams of Nickel II chloride and mixes it with 10.0 grams of sodium hydroxide. How much nickel II hydroxide will be produced given the student has a 4.80% error?
May 31, 2010 by Tameka

CHEMISTRY> HELP QUICK! pls
1. What is the amount of oxalate in 2 mL of 0.035M solution? a) 7 10C2 mole b) 1.75 10C2 mole c) 7 10C5 mole d) 1.75 10C5 mole 2. Sodium oxalate may be prepared by titrating oxalic acid (C2H2O4) with sodium hydroxide, according to the equation: C2H2O4(aq) + ...
August 28, 2010 by Lucinda

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.
December 14, 2012 by Dayton

Grade 12 Chemistry
When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized completely by 75.0 mL of 1.0 mol/L sodium hydroxide in a coffee-cup calorimeter, the temperature of the total solution changes from 20.2 to 25.6. Determine the quantity of energy transferred, q, and state whether the ...
April 15, 2014 by Vanessa

chemistry
Write the balanced molecular, complete ionic, and net ionic equations for the following reactions in aqueous solution: a. magnesium chloride reacts with potassium carbonate b. sulfuric acid reacts with sodium hydroxide
October 13, 2011 by gold

chem
Sulfuric acid reacts with sodium hydroxide according to this equation: H2S04 + 2 NaOH Na2(SO4) + 2 H2O A 10.00 mL sample of the H2SO4 solution required 13.71 mL of 0.309 M NaOH for neutralization. Calculate the molarity of the acid.
November 21, 2012 by Liang9506

chemistry
You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
July 30, 2013 by faruk

College Chemistry
I need help with this question!! a sample of pure KHP weighing .8097g dissolved in water and titrated with 40.25 mL of NaOH solution. The same NaOH solution was used to titrate a solution of a weak diprotic acid H2X. A sample of 0.18694g of the weak acid was first dissolved in...
April 25, 2012 by Emily

Chemistry
Calculate the solid needed to make a 250ml solution that is 0.34M in sodium cation, using sodium sulfate decahydrate. I came up with 13.685g. but how do I make that into 250ml of a solution that is0.34M in sodium cation?
October 27, 2011 by Denise

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