An Aqueous Solution Is Prepared by Dissolving 0

question 70

Multiple Choice

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
Of nitrous acid is 1.36 × 10^-3.

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

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