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This lesson covers neutralisation reactions for Edexcel GCSE Chemistry (1CH0). You need to understand the general equations for neutralisation, write word and balanced symbol equations, and know the ionic equation for neutralisation. This topic is fundamental and links to making salts, which is covered in the next lesson.
Neutralisation is a chemical reaction between an acid and a base to produce a salt and water. The acid and base cancel each other out — the resulting solution is closer to pH 7 (neutral).
The general equation for neutralisation is:
acid + base → salt + water
Neutralisation is an exothermic reaction — it releases heat energy to the surroundings. You can detect this by measuring the temperature rise of the solution during the reaction.
There are several types of neutralisation reaction, depending on the type of base used.
A metal oxide is a base. When it reacts with an acid, the products are a salt and water.
Word equation: acid + metal oxide → salt + water
Examples:
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