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# From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

4.1     From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

$3NO(g)\rightarrow N_{2}O\: \: Rate= k\left [ NO \right ]^{2}$

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Given pieces of information

Rate = $k[NO]^{2}$

so the order of the reaction is 2

The dimension of k = $Rate/[NO]^{2}$

$\\=molL^{-1}s^{-1}/mol^{2}L^{-2}\\ =L\ mol^{-1}\ s ^{-1}$

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