Question

# $2{\mathrm{Br}}^{-}+{\mathrm{H}}_{2}{\mathrm{O}}_{2}+2{\mathrm{H}}^{+}\to {\mathrm{Br}}_{2}+2{\mathrm{H}}_{2}\mathrm{O}$ Rate =$\mathrm{k}\left({\mathrm{H}}_{2}{\mathrm{O}}_{2}\right)\left({\mathrm{H}}^{+}\right)\left({\mathrm{Br}}^{-}\right)$ What is the effect on rate constant on increasing bromide ions?

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Solution

## Effect of Rate constant :The rate constant is an entity that shows how the rate changes with time and the concentration of reactants.In the reaction, $2{\mathrm{Br}}^{-}+{\mathrm{H}}_{2}{\mathrm{O}}_{2}+2{\mathrm{H}}^{+}\to {\mathrm{Br}}_{2}+2{\mathrm{H}}_{2}\mathrm{O}$Rate =$\mathrm{k}\left({\mathrm{H}}_{2}{\mathrm{O}}_{2}\right)\left({\mathrm{H}}^{+}\right)\left({\mathrm{Br}}^{-}\right)$As the rate constant is directly proportional to the concentration of bromide ions. So, as the concentration of bromide ion increases the rate constant value increases.Hence the rate constant goes on increasing if bromide ions increase simultaneously.

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