What is the buffer capacity () of a solution if adding 0.02 moles of NaOH to 1 Litre of the buffer c — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

Buffer capacity is defined as the moles of acid/base added per litre divided by the change in pH: $\beta = \frac{\Delta n}{\Delta pH}$. Here, $\Delta n = 0.02$ and $\Delta pH = 5.80 - 5.75 = 0.05$. So, $\beta = 0.02 / 0.05 = 0.4$.