A Solution Is Prepared by Dissolving 0

question 31

Multiple Choice

A solution is prepared by dissolving 0.23 mol of hypochlorous acid and 0.27 mol of sodium hypochlorite 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 of hypochlorous acid is 1.36 × 10^-3.

• A) O
• C)hypochlorite ion
• D)hypochlorous acid
• E)This is a buffer solution: the pH does not change upon addition of acid or base.

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