Gas absorption in an agitated tank with a first-order reaction.

Oxygen is absorbed in a reducing solution, where it undergoes a first-order reaction with a rate constant of \(40 \mathrm{~s}^{-1}\). The conditions are such that the liquid-side mass transfer coefficient \(k_{\mathrm{L}}\) is equal to \(8 \times 10^{-3} \mathrm{~cm} / \mathrm{s}\).

Will there be appreciable reaction in the film? Use \(D_{\mathrm{A}}=1.5 \times 10^{-5} \mathrm{~cm}^{2} / \mathrm{s}\) for dissolved oxygen?

What would the rate of reaction be if the oxygen partial pressure were \(0.21 \mathrm{~atm}\) ? Use the same Henry constant as that for oxygen for water.