Which of the following pairings of molar amounts and equivalents is correct? A) 1 mole of Cl^- ion = 1 equivalent Cl^- ion B) 2 moles Ca²⁺ ion = 2 equivalents Ca²⁺ ion C) 1 mole PO₄³^- ion = 3 equivalents PO₄³^- ion D) more than one correct response E) no correct response

Question

Quizplus · Accepted Answer

The correct answers are A and C. In A, 1 mole of a monovalent ion equals 1 equivalent, which is correct because the equivalence of an ion is determined by its charge or valency, and in this case, it is 1. In C, 1 mole of a trivalent ion (with a valency of 3) equals 3 equivalents, which is also correct for the same reason.

Which of the Following Pairings of Molar Amounts and Equivalents