2. Dr. Dahm has prepared 250 mL of a acetate buffer which contains 0.1 mol of acetic acid (CH₂COOH) and 0.15 moles of acetate (CH₂COO). Determine the initial pH. If he then adds 0.025 moles of H* calculate the new pH. Ka = 1.8 × 10'³ CH₂COOH(aq) + H₂O CH₂COO (aq) + H₂O*(aq) 3. Dr. Dahm makes a second acetate buffer exactly the same way as in #2, but he then adds 15 mL of 0.50 M NaOH calculate the new pH.

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2. Dr. Dahm has prepared 250 mL of a acetate buffer which contains 0.1 mol of acetic acid
(CH₂COOH) and 0.15 moles of acetate (CH₂COO). Determine the initial pH. If he then
adds 0.025 moles of H* calculate the new pH. Ka = 1.8 × 10³
CH₂COOH(aq) + H₂O
CH₂COO (aq) +
HO (aq)
3. Dr. Dahm makes a second acetate buffer exactly the same way as in #2, but he then adds 15
mL of 0.50 M NaOH calculate the new pH.
Transcribed Image Text:2. Dr. Dahm has prepared 250 mL of a acetate buffer which contains 0.1 mol of acetic acid (CH₂COOH) and 0.15 moles of acetate (CH₂COO). Determine the initial pH. If he then adds 0.025 moles of H* calculate the new pH. Ka = 1.8 × 10³ CH₂COOH(aq) + H₂O CH₂COO (aq) + HO (aq) 3. Dr. Dahm makes a second acetate buffer exactly the same way as in #2, but he then adds 15 mL of 0.50 M NaOH calculate the new pH.
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