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The following data are for the decomposition of ammonium nitrite in aqueous solution :
The order of reaction is:
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The order of reaction is:
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$\mathrm{NH}_{4} \mathrm{NO}_{2} \longrightarrow \mathrm{N}_{2}+2 \mathrm{H}_{2} \mathrm{O}$
Volume of $\mathrm{N}_{2}$ formed in successive five minutes are $2.75 \mathrm{cc}, 2.40 \mathrm{cc}$ and $2.25 \mathrm{cc}$ which is in decreasing order. So rate of reaction is dependent on concentration of $\mathrm{NH}_{4} \mathrm{NO}_{2}$. As decrease is not very fast so it will be first order reaction.
Volume of $\mathrm{N}_{2}$ formed in successive five minutes are $2.75 \mathrm{cc}, 2.40 \mathrm{cc}$ and $2.25 \mathrm{cc}$ which is in decreasing order. So rate of reaction is dependent on concentration of $\mathrm{NH}_{4} \mathrm{NO}_{2}$. As decrease is not very fast so it will be first order reaction.
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