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Author Question: Potassium hydrogen phthalate (molar mass = 204.2 g/mol) is one of the most commonly used acids for ... (Read 83 times)

dakota nelson

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Question 1

Benzoic acid (C6H5CO2H = HBz) solutions are sometimes used in experiments to determine the molarity of a basic solution of unknown concentration. What is the pH of a 0.100 M solution of benzoic acid if Ka = 6.5 × 10-5 and the equilibrium equation of interest is HBz(aq) + H2O(l) ⇌ H3O+(aq) + Bz-(aq).
◦ 5.19
◦ 2.59
◦ 4.19
◦ 1.00

Question 2

Potassium hydrogen phthalate (molar mass = 204.2 g/mol) is one of the most commonly used acids for standardizing solutions containing bases. KHP is a monoprotic weak acid with Ka = 3.91 × 10-6. Calculate the pH of the solution that results when 0.40 g of KHP is dissolved in enough water to produce 25.0 mL of solution.
◦ 3.26
◦ 5.41
◦ 4.30
◦ 2.10


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Marked as best answer by dakota nelson on Feb 15, 2020

ririgirl15

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dakota nelson

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Reply 2 on: Feb 15, 2020
:D TYSM


AngeliqueG

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Reply 3 on: Yesterday
Excellent

 

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