AP Chemistry
8.5 Acid-Base Titrations
8.3 Weak Acid and Base Equilibria
8.2 pH and pOH of Strong Acids and Bases
A student prepares two separate acid solutions at \(25\ ^\circ\text{C}\):
Sample 1 contains \(50.0\text{ mL}\) of \(\text{HCl(aq)}\) at \(\text{pH} = 3.00\).
Sample 2 contains \(50.0\text{ mL}\) of a weak monoprotic acid, \(\text{HA(aq)}\) (\(K_a = 1.0 \times 10^{-5}\)), at \(\text{pH} = 3.00\).
Each sample is titrated to its equivalence point with standardized \(0.100\text{ M NaOH(aq)}\). Let \(V_1\) be the volume of \(\text{NaOH(aq)}\) required to reach the equivalence point for Sample 1, and let \(V_2\) be the volume required for Sample 2. Which of the following correctly compares \(V_1\) and \(V_2\), and provides the correct justification?
Sample 1 contains \(50.0\text{ mL}\) of \(\text{HCl(aq)}\) at \(\text{pH} = 3.00\).
Sample 2 contains \(50.0\text{ mL}\) of a weak monoprotic acid, \(\text{HA(aq)}\) (\(K_a = 1.0 \times 10^{-5}\)), at \(\text{pH} = 3.00\).
Each sample is titrated to its equivalence point with standardized \(0.100\text{ M NaOH(aq)}\). Let \(V_1\) be the volume of \(\text{NaOH(aq)}\) required to reach the equivalence point for Sample 1, and let \(V_2\) be the volume required for Sample 2. Which of the following correctly compares \(V_1\) and \(V_2\), and provides the correct justification?
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