What Is the PH of the Resulting Solution If 45

question 6

Multiple Choice

What is the pH of the resulting solution if 45 mL of 0.432 mol L^-1 aqueous methylamine,CH₃NH₂,is added to 15 mL of 0.234 mol L^-1 HCl(aq) ?
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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