What Is the PH of a Solution Prepared by Mixing

question 143

Multiple Choice

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 mol L^-1 methylamine, CH₃NH₂, with 20.00 mL of 0.10 mol L^-1 methylammonium chloride, CH₃NH₃Cl? Assume that the volume of the solutions are additive and that K_b = 3.70 × 10^-4 for methylamine.

• A) 10.17
• B) 10.57
• C) 10.97
• D) 11.78

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