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From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.
(i) 3 NO(g) → N2O(g) Rate = k[NO]2
(ii) H2O2 (aq) + 3 I− (aq) + 2 H+ → 2 H2O (l) + 
Rate = k[H2O2][I−]
(iii) CH3CHO(g) → CH4(g) + CO(g) Rate = k [CH3CHO]3/2
(iv) C2H5Cl(g) → C2H4(g) + HCl(g) Rate = k [C2H5Cl]
Asked by Geetanjali Last Modified
Answer (i) Given rate = k [NO]2
Therefore, order of the reaction = 2
Dimension of 
(ii) Given rate = k [H2O2] [I−]
Therefore, order of the reaction = 2
Dimension of 
(iii) Given rate = k [CH3CHO]3/2
Therefore, order of reaction = 
Dimension of 
(iv) Given rate = k [C2H5Cl]
Therefore, order of the reaction = 1
Dimension of 
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