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How can I balance this equation

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None of the above

answer is A.

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Detailed Solution

Concept- The given chemical equation is,

We must add coefficients 6 to KBr and 3 to

in order to balance the K atoms. The number of K atoms on both sides of the reaction are equalised by this action.

Now, to balance the number of aluminium atoms, we have to add coefficient 2 to

Hence, the correct answer is option (1).

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