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Question

# Barium Chloride+Aluminium Sulphate→Barium Sulphate+Aluminium Chloride Which of the following balanced chemical equation represent the above chemical reaction correctly?

A

(aq) + +

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B

(aq) + +

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C

(aq) + +

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D

+ +

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Solution

## The correct option is D + + Barium Chloride + Aluminium Sulphate→ Barium Sulphate +Aluminium Chloride. The skeleton reaction is BaCl2 + Al2(SO4)3 → BaSO4+AlCl3 1. Consider Aluminium Sulphate compound first because it has more number of atoms, 2 atoms of Al are present on reactant side and 1 atom on product side. To balance Al, take the coefficient of AlCl3 on product side as 2. So the equation becomes,BaCl2 + Al2(SO4)3 → BaSO4+2AlCl3 2. Now consider the set (SO4) instead of S and O separately because it is present in reactant and product side in the same form. There are 3 sets on reactant side and 1 set on product side, to balance this, take the coefficient of BaSO4 as 3. BaCl2 + Al2(SO4)3 → 3BaSO4+AlCl3 3. Now consider Ba, there are 3 atoms on product side and 1 atom on reactant side, to balance it, take the coefficient of BaCl2 as 3. The Cl atoms are also balanced. 3BaCl2 + Al2(SO4)3 → 3BaSO4+2AlCl3 The balanced reaction is, 3BaCl2 + Al2(SO4)3 → 3BaSO4+2AlCl3

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