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1. What is the pH of a buffer solution that is composed of a weak acid,...

1. What is the pH of a buffer solution that is composed of a weak acid, HA (Ka=7.2×10–8), and the conjugate base, A–, after 2.81 mL of 0.122 M HCl solution is added. The initial concentrations of the 183 mL buffer solution are [HA]=0.67 M and [A–]=0.65 M. Enter your value to two (2) decimal places.

2. What is the pH of a buffer solution that is composed of a weak acid, HA (Ka=7.37×10–4), and the conjugate base, A–, after 1.54 mL of 0.113 M HCl solution is added. The initial concentrations of the 94 mL buffer solution are [HA]=0.67 M and [A–]=0.76 M. Enter your value to two (2) decimal places.

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