The pH of the solution containing 50   mL each of 0 . 10   M sodium acetate and 0 . 01   M acetic acid is [Given pK a of CH 3 COOH = 4 . 57 ]

Step-by-step solution

The given solution is an acidic buffer solution. According to the Henderson equation for acidic buffer, pH = pK a + log 10 salt acid Given that, pK a = 4 . 57               salt = sodium   acetate = 0 . 1 M Acid = Acetic   acid = 0 . 01 M Hence, the pH = 4 . 57 + log 0 . 1 0 . 01 = 4 . 57 + 1 = 5 . 57