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Chemical Formulae

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Question

Write the chemical formula of the sulphate of Aluminium, Ammonium and Zinc.

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Solution

Valencies of aluminium, ammonium and zinc are 3, 1 and 2, respectively.

The valency of sulphate is 2.

Hence, chemical formulae of the sulphates of aluminium, ammonium and zinc are $A l_{2} {(S O_{4})}_{3}, (N H_{4}) 2 S O_{4} a n d Z n S O_{4} .$

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