What is the buffer capacity () of a solution if adding 0.02 moles of to 1 Litre of the buffer change — Ionic Equilibrium Chemistry Question
Question
What is the buffer capacity ($\beta$) of a solution if adding 0.02 moles of $NaOH$ to 1 Litre of the buffer changes its pH from 5.75 to 5.80?
Answer: B
💡 Solution & Explanation
Buffer capacity $\beta = \Delta n / \Delta pH$. Here, $\Delta n = 0.02 \text{ moles}$ and $\Delta pH = 5.80 - 5.75 = 0.05$. $\beta = 0.02 / 0.05 = 0.4$.
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