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  4. Half-life of reaction is inversely proportional to the square of initial concentration. The order of reaction is

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Q. Half-life of reaction is inversely proportional to the square of initial concentration. The order of reaction is

CMC MedicalCMC Medical 2015

Solution:

We have $ {{t}_{1/2}}\propto \frac{1}{{{a}^{n-1}}} $ When $ n=3 $ $ {{t}_{1/2}}=\frac{1}{{{a}^{3}}-1}=\frac{1}{{{a}^{2}}} $ $ \therefore $ Order of reaction = 3