Question

using Henderson eqn calculate how much ch3coona is added to 1 lit of 0.01 molar acetic acid to make a pH of 4.1 ( of for CH3 cooh is 1.8 × 10-5)​

Answer 1

Answer:

For (a), the Henderson-Hasselbalch equation, pH=pKa+log([A−]/[HA]), comes in handy. Because your molarities and volumes of the acid and its conjugate base are equal, this indeed reduces to simply pH=−log(6.3⋅10−5).

Answer 2

Answer:

using Henderson eqn calculate how much ch3coona is added to 1 lit of 0.01 molar acetic acid to make a pH of 4.1 ( of for CH3 cooh is 1.8 × 10-5)