What is the ph of a 75.0 ml solution that is 0.047 m in weak base and 0.057 m in the conjugate weak acid ( k a = 7.2 × 10 − 8 ) ?

The pH of the buffer is 7.22

Explanation:

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

We are given:

= negative logarithm of acid dissociation constant = 7.14

pH = ?

Putting values in above equation, we get:

Hence, the pH of the buffer is 7.22

i believe the answer is a.

10 years is the answer