Which substance is always produced in the reaction between hydrochloric acid and sodium hydroxide

1. water

Explanation:

Neutralization reaction  is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule.

When hydrochloric acid ad sodium hydroxide combines, the ions from acid combines with ions from base to form water and sodium chloride which is soluble in water.

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Thus water is always produced in the reaction between hydrochloric acid and sodium hydroxide.

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