10. (12 pts) Formic acid, HCCOH, ionizes according to the following equation: HCOOH(aq)+H,O(l)=HCOO (aq)+H,O* (aq) You have 500.0 mL of 0.200 M forming acid. Calculate the volume of NaOH, 0.0500 M, that should be added to formic acid to form a buffer that has a pH of 4.00. Ka = 4.0 × 104. 14. (12 pts) Calculate the pH of 0.200 M Barium acetate, Ba(CH3COO)2. Ka for acetic acid, CH3COOH, is 1.8 × 10-5.

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10. (12 pts) Formic acid, HCCOH, ionizes according to the following equation:
HCOOH(aq)+H,O(l)=HCOO (aq)+H,O* (aq)
You have 500.0 mL of 0.200 M forming acid. Calculate the volume of NaOH, 0.0500 M, that
should be added to formic acid to form a buffer that has a pH of 4.00. Ka = 4.0 × 104.
14. (12 pts) Calculate the pH of 0.200 M Barium acetate, Ba(CH3COO)2. Ka for acetic
acid, CH3COOH, is 1.8 × 10-5.
Transcribed Image Text:10. (12 pts) Formic acid, HCCOH, ionizes according to the following equation: HCOOH(aq)+H,O(l)=HCOO (aq)+H,O* (aq) You have 500.0 mL of 0.200 M forming acid. Calculate the volume of NaOH, 0.0500 M, that should be added to formic acid to form a buffer that has a pH of 4.00. Ka = 4.0 × 104. 14. (12 pts) Calculate the pH of 0.200 M Barium acetate, Ba(CH3COO)2. Ka for acetic acid, CH3COOH, is 1.8 × 10-5.
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