When added to water at neutral pH (7.0), an acid will ____
a. act as a proton donor, raising the pH of the solution
b. act as a proton acceptor, raising the pH of the solution
c. act as a proton donor, lowering the pH of the solution
d. act as a proton acceptor, lowering the pH of the solution
e. do nothing since the aqueous solution is neutral
ANSWER: c
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