Question

For the reaction 2A + B → Products, find the rate law from the following data

[A]/M [B]/M rate/Ms⁻¹
0.3 0.05 0.15
0.6 0.05 0.30
0.6 0.20 1.20

What is the rate constant and order of the reaction?

Answer 1

As the rate of the reaction becOmes two timees on doubling the concentartion of b so the reaction is first ordr wrt to b when both a and b is doubled then rate becomes eight times.as rxn is 1order art to b due to rate increases two times hence due to A rate increases four times which is 2^2 hence reaction is second order wrt to a

Rate law=(a^2)(b^1)

Answer 2

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As the rate of the reaction becomes two times on doubling the concentartion of b so the reaction is first ordr wrt to b when both a and b is doubled then rate becomes eight times.as reaction is 1 order wrt to b due to rate increases two times hence due to A rate increases four times which is 2^2 hence reaction is second order wrt to a

Rate law=(a^2)(b^1)

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