Which of the following is an observable property of many acids?

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Multiple Choice

Which of the following is an observable property of many acids?

Acids often show gas evolution when they meet reactive metals. In such reactions, the acid helps drive a transfer of electrons from the metal, producing hydrogen gas that you can see fizzing or bubbling, along with a metal salt formed from the metal and the acid. For example, hydrochloric acid reacts with zinc to give zinc chloride and hydrogen gas. This gas production is a clear, observable sign. The other statements don’t describe a general property of acids. Slipperiness is characteristic of bases, not acids. Acids reacting with acids don’t typically form salts. And mixing an acid with a base tends to neutralize the solution, making it less acidic rather than more.

Acids often show gas evolution when they meet reactive metals. In such reactions, the acid helps drive a transfer of electrons from the metal, producing hydrogen gas that you can see fizzing or bubbling, along with a metal salt formed from the metal and the acid. For example, hydrochloric acid reacts with zinc to give zinc chloride and hydrogen gas. This gas production is a clear, observable sign.

The other statements don’t describe a general property of acids. Slipperiness is characteristic of bases, not acids. Acids reacting with acids don’t typically form salts. And mixing an acid with a base tends to neutralize the solution, making it less acidic rather than more.

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