NEET 2011 Chemistry question

Which one of the following statements for the order of a reaction is incorrect ?

(1)Order can be determined only experimentally.
(2)Order is not influenced by stoichiometric coefficient of the reactants.
(3)Order of reaction is sum of power to the concentration terms of reactants to express the rate of reaction.
(4)Order of reaction is always whole number.Correct

Answer: (4)

Solution

Order is an experimentally determined quantity (1 is true), it need not equal the stoichiometric coefficients (2 is true) and it is the sum of the powers of the concentration terms in the rate law (3 is

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Question ID VK-090784