State the type of reactions each of the following represent and balance the ones that are not balanced.
(a) $C l_{2} + 2 K B r \to 2 K C l + B r_{2}$

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Solution

$C l_{2} + 2 K B r \to 2 K C l + B r_{2}$
The given reaction is a displacement reaction.
A balanced equation should contain equal number of atoms on both the sides of the equation.
As the given equation contains equal number of atoms on both the sides of the equation, it is balanced.

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