Learning objective

Write word equations for soluble salt preparation reactions.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Topic

Reactions of acids

Subtopic

Soluble salts

AQA GCSE ChemistryChemical changes

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Understand this objective

Short explanation

To write word equations for soluble salt preparation reactions, first identify the reactants involved. Typically, this involves an acid and a base or an acid and a carbonate. For example, when hydrochloric acid reacts with sodium hydroxide, the word equation is 'hydrochloric acid + sodium hydroxide → sodium chloride + water'. Similarly, when sulfuric acid reacts with calcium carbonate, the equation is 'sulfuric acid + calcium carbonate → calcium sulfate + carbon dioxide + water'. These equations illustrate how soluble salts are formed through neutralisation or acid-carbonate reactions.

Key concepts

soluble saltword equation

Why it matters

This objective helps connect Soluble salts to exam-style questions, flashcards, and revision notes for Reactions of acids.

Common mistakes

1 linked

Misidentifying the solid reactant as the salt: Explain that in a soluble salt preparation the insoluble solid is the reactant that reacts with the acid to form the soluble salt and a gas; the product is the soluble salt, not the solid that was added.

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