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# Use the Henderson-Hasselbalch equation to perform the following calculations. The Ka of acetic acid is 1.8 10-5. Calculate the volume of the 0.

Use the Henderson-Hasselbalch equation to perform the following calculations. The Ka of acetic acid is 1.8 × 10–5.
a. Calculate the volume of the 0.500 M acetic acid and the volume of deionized water necessary to make 60.0
mL of 0.250 M CH3COOH.
b. Buffer: Calculate the mass of solid sodium acetate required to mix with 60.0 mL of 0.250 M acetic acid to
prepare a pH 4 buffer. Record the mass in your data table.

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1) Calculate moles of 0.250 M CH3COOH
M = m/V
0.250 = m /0.06 L
M = 0.250 * 0.06 = 0.015 mole
Calculate volume of 0.5 M CH3COOH
V = m/M
V = 0.015/0.5
V = 0.03 L V = 30 ml
Ph = PKa +...

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