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Which of the following will represent the correct chemical formula for aluminium sulphate and Calcium carbonate respectively?

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Al₂(SO₄)₃ and CaCO₃

CaPO₄ and AlCl₃

Ca(HCO₃)₂ and AlSO₄

Al(CO)₃ and CaCl₂

answer is A.

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Detailed Solution

Al₂(SO₄)₃ and CaCO₃ represent the correct chemical formula.

The chemical formula for aluminium sulphate is Al₂(SO₄)₃. Here aluminum has a valency of +3 and sulphate has a valency of -2.

The chemical compound calcium carbonate, with the formula CaCO₃. Here, calcium has a valency of +2 and carbonate has a valency of -2.

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