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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 39 times)

dakota nelson

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on: Feb 15, 2020

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
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by dakota nelson on Feb 15, 2020

ririgirl15

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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dakota nelson

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Reply 2 on: Feb 15, 2020
Thanks for the timely response, appreciate it

diana chang

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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