What Is the PH of the Resulting Solution If 45

question 36

Multiple Choice

What is the pH of the resulting solution if 45 mL of 0.432 mol L^-1 methylamine, CH₃NH₂, is added to 15 mL of 0.234 mol L^-1 HCl? Assume that the volumes of the solutions are additive. K_a = 2.70 × 10^-11 for CH₃NH₃⁺.

• A) 2.77
• B) 4.09
• C) 9.91
• D) 11.23

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