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Reactions of Acids with Insoluble Bases

Many metal oxides are insoluble bases.Some metal hydroxides are insoluble.All group 1 hydroxides are soluble. Solubility of group 2 hydroxides increases down the group.acid + base → salt + water
For example:CuO(s) + H2SO4(aq) → CuSO4(aq) + H2O(l)CuO(s) + 2H+(aq) → Cu2+(aq) + H2O(l)Zn(OH)2(s) + 2HNO3(aq) → Zn(NO3)2 (aq) + 2H2O(l)Zn(OH)2(s) + 2H+(aq) → Zn2+ (aq) + 2H2O(l)

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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4A: The elements of Groups 1 and 2. Topic: Types of Reaction.

Key terms in this lesson

base
A substance that reacts with an acid to form a salt and water only.

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