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AP® Chemistry

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Moderate

Stoichiometry and Acid-Base Reactions

APCHEM-GPKDON

Consider the following balanced chemical equation:

$$NaOH(aq)+HN{ O }_{ 3 }(aq)\rightarrow NaN{ O }_{ 3 }(aq)+{ H }_{ 2 }O(l)$$

If 43.55 grams of $NaOH$ is present in 1.23 L of an $NaOH$ solution of unknown concentration and mixed with 1.35 L of a 1.25 molar $HN{ O }_{ 3 }$ solution, which of the following is true?

A

The resulting solution has a pH of 7.

B

The resulting solution has a pH less than 7.

C

The resulting solution has a pH greater than 7.

D

The resulting solution is no longer aqueous because a species other than water is present in greatest quantity and is now the solvent.