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Question
From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant.
\[\ce{3NO_{(g)} -> N2O_{(g)}}\] Rate = k[NO]2
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Solution
Given rate = k[NO]2
∴ The order of the reaction = 2
Dimension of k = \[\ce{\frac{Rate}{[NO]^2}}\]
= \[\ce{\frac{(mol L^{-1} s^{-1})}{(mol L^{-1})^2}}\]
= \[\ce{\frac{(mol L^{-1} s^{-1})}{(mol^2 L^{-2})}}\]
= L mol−1 s−1
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