Acids, such as hydrochloric acid, react with alkalis, such as sodium hydroxide, to produce a salt and water. Indicators can be used to see when the ne

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Acids, such as hydrochloric acid, react with alkalis, such as sodium hydroxide, to produce a salt and water. Indicators can be used to see when the neutralisation has occurred. When universal indicator turns green the pH is neutral (about 7).

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