Author Question: An aqueous solution is prepared by dissolving 0.23 mol of nitrous acid and 0.27 mol of sodium ... (Read 71 times)

lidoalex · **on:** Jul 8, 2021

An aqueous solution is prepared by dissolving 0.23 mol of nitrous acid and 0.27 mol of sodium nitrite in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of HCl to this buffer solution causes the pH to drop slightly. The pH does not decrease drastically because the HCl reacts with the ________ present in the buffer solution. The K_a of nitrous acid is 1.36 × 10^-3.
◦ H₂O
◦ H₃O⁺
◦ nitrite ion
◦ nitrous acid
◦ This is a buffer solution: the pH does not change at all upon addition of acid or base.

Harbringer · **Reply #1 on:** Jul 8, 2021

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