Which of the following is formed when a strong acid reacts with methylamine, CH₃NH₂? A) CH₃NH₃ B) CH₃NH₃⁺ C) (CH₃)₂NH₂⁺ D) none of these

Question

Quizplus · Accepted Answer

When a strong acid reacts with methylamine, the methylamine acts as a base and accepts a proton (H+) from the acid. This forms a salt, which consists of the conjugate acid of methylamine (CH3NH3+) and the conjugate base of the acid. In this case, the conjugate acid of methylamine is CH3NH3+ and the conjugate base of the acid is S1U1P1- (assuming the acid is monoprotic). Thus, the correct formula for the salt is CH3NH3+S1U1P1-. Option B correctly shows the formula for the salt with the addition of the counterion S1S1P0 to balance the charge. Option A does not include the counterion and Option C includes an incorrect subscripts for the methylamine. Option D is incorrect because a salt is formed when a strong acid reacts with a base, so a product must be formed.

Which of the Following Is Formed When a Strong Acid