Which compound is a salt?

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Prepare for the Acids, Bases, and Salts Test. Study with flashcards and multiple-choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which compound is a salt?

Explanation:
A salt is an ionic compound formed from the cation of a base and the anion of an acid. Sodium phosphate contains Na+ ions and the phosphate ion PO4^3-, making it an ionic compound with a metal cation and a nonmetal anion. It doesn’t have acidic hydrogen or hydroxide groups, so it’s not an acid or a base itself. The other substances are acids (phosphoric acid and acetic acid) or a base (calcium hydroxide). So, the compound that fits the definition of a salt is the one made of Na+ and PO4^3-.

A salt is an ionic compound formed from the cation of a base and the anion of an acid. Sodium phosphate contains Na+ ions and the phosphate ion PO4^3-, making it an ionic compound with a metal cation and a nonmetal anion. It doesn’t have acidic hydrogen or hydroxide groups, so it’s not an acid or a base itself. The other substances are acids (phosphoric acid and acetic acid) or a base (calcium hydroxide). So, the compound that fits the definition of a salt is the one made of Na+ and PO4^3-.

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