D: when sodium sulfide dissociates in water, the sulfur ion reacts with water as follows: s-2 + h2o → oh- + sh- which of the following statements is true? na2s is a base because it ionizes to release oh-. na2s is an acid because it is a proton donor. na2s is a base because it increases the hydroxide concentration. none of these

Option (a) is the correct answer.

Explanation:

A base is a substance that gives hydroxide ions () upon dissociation in water. This means that a base increases the hydroxide ion concentration in a solution.

On the other hand, an acid is a substance that gives hydrogen ions () upon dissociation in water. This means that an acid increases the hydrogen ion concentration in a solution.

For example,

Since, sodium sulfide () dissociates to give hydroxide ions.

Hence, we can conclude that is a base because it ionizes to release .

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