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12 Nov 2019

Determine the pH of each of the following.

Use tables of Ka or Kb

a) A 0.355 M solution of phenol

b) A 6.00 x 10-3 M solution of benzoic acid

c) A solution made by dissolving 0.333 moL of HNO2 in 500. mL of water

d) A 0.500 M solution of aniline

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Patrina Schowalter
Patrina SchowalterLv2
19 Apr 2019

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Related questions

Determine the pH of the following.

a.) .355 M solution of phenol
b.) a 6.00*10-3 solution of benzoic acid
c.) a solution made by dissolving .333mol of HNO2 in 500mL of h2o
d.) .500 M solution of aniline

For each acid write the conjugate base then determine the Kb for that base.

Determine the pH of each solution.

a. 0.155 M HNO2 (for HNO2, Ka=4.6×10^−4)

b. 0.0210 M KOH

c. 0.240 M CH3NH3I (for CH3NH2, Kb=4.4×10^−4)

d. 0.324 M KC6H5O (for HC6H5O, Ka=1.3×10^−10)

A. What is the ph of 10 ml of .10 M hcl, 5 ml of .10 M h2so4 and .060g of Naoh. Answer should be 1.70

B. What is the pH of a solution of ammonia 7% by weight (density 1.0g/ml). Answer should be 11.93

C. What is the pH or .30 M acetic acid with 41 g of sodium acetate per liter. Answer should be 5 grams

D. How many grams of the salt are required to prepare 100 ml of sodium acetate added to .10 M acetic acid to give ph of 6.00. Answer should be 14 grams



E. pH of .020 M ammonium sulfate. answer should be 5.32



F. pH of solution made by dissolving the following to give 100ml final solution
1.) .010 mole HNO2 and .0050 mol KNO2
2.) .010 mol HCl and .010 mol KNO2
3.) .010 mol KOh and .020 mol HNO2

Answer should be
1.) 2.99
2.) 2.15
3.) 3.29

I really have a hard time with the type of problems that you have to mix two things together. I never know how to set up the actual chemical equation, when to use ka/kb (and when not to), when to use the limiting reagent type step, and whether to multiply something my its stoichemteric coefficient. Are there any tips to remember these things ?




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