1.

Identify the order for the following reactions (i) Rusting of Iron (ii) Radioactive disintegration of ""_(92)U^(238) (iii) 2A+B toproducts, rate=k[A]^(1//2)[B]^(2)

Answer»

Solution :`1Fe+underset(("excess"))(3O_(2)) overset(H_(2)O"(excess)") to 2Fe_(2)O_(3). xH_(2)O`
Theoritically ORDER value may be more than one but practically one.
(ii) All radioactive disintegrations are first order reactions
(iii) `2A+3B to ` PRODUCTS
rate `=K[A]^(1//2)[B]^(2)`
Order `=(1)/(2)+2=(5)/(2)=2.5`


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