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Q. Ratio of $t_{75 \%}$ to $t_{50 \%}$ for a $2^{\text{nd }}$ order reaction is : (where $t_{75 \%}=$ time for $75\%$ completion of reaction)

NTA AbhyasNTA Abhyas 2022

Solution:

For $2^{\text{nd }}$ order reaction
$100\frac{ \rightarrow }{t = 10 \min}50\frac{ \rightarrow }{t = 20 \min}25$
$\frac{t_{75 \%}}{t_{50 \%}}=\frac{30}{10}=3$