In studying the decomposition of ozoneA 2 O3 (g) --> 3 O2 (g) in a 2-dm3 reaction vessel, it is found that d[O3]/dt = -1.5 x 10-2 mol dm-3s-1 (a) What is the rate of the reaction? (b) What is the value of d[O2]/dt?   The answer is [7.5 x 10-3; 2.25 x 10-2]

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