A solution contains 0.34 M HA (K_a = 2.0 *10^-7) and 0.17 M NaA. Calculate the pH after 0.05 mol of NaOH is added to 1.00 L of this solution.

Name: A solution contains 0.34 M HA (K a = 2.0 *10 -7 ) and 0.17 M NaA. Calculate the pH after 0.05 mol of NaOH is added to 1.00 L of this solution.
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Question

Quizplus · Accepted Answer

The addition of NaOH will convert HA to A-, increasing the concentration of A- and decreasing the concentration of HA. The equilibrium will shift to the left, decreasing the pH. The correct answer is A.

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