AP Chemistry
8.8 Properties of Buffers
8.4 Acid-Base Reactions and Buffers
A buffer solution is prepared by mixing \(50.0\text{ mL}\) of \(0.20\text{ M }\text{HNO}_2\text{(aq)}\) with \(50.0\text{ mL}\) of \(0.20\text{ M }\text{NaNO}_2\text{(aq)}\). A student adds \(1.0\text{ mL}\) of \(0.10\text{ M }\text{HCl(aq)}\) to the mixture. Which of the following best explains the effect of the added \(\text{HCl(aq)}\) on the \(\text{pH}\) of the solution?
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