18. There is data for constructing the kinetic curves of reagent A and B of a sequential monomolecular reaction
Time, min 0.0 1.0 2.0 3.0 4.0 5.0 7.0
CA mol/m3 200.0 127.5 81.3 51.8 33.1 21.1 8.6
St, mol/m3 0.0 68.7 106.0 123.8 129.9 128.9 116.7
Determine the rate constants of the stages and plot the kinetic curve of the reaction product.

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