Danckwerts and Gillham, in Trans. I. Chem. E., 44, 42, March 1966, studied the rate of CO₂ absorption into an alkaline buffered solution of K₂C0₃ and KHCO,. The resulting reaction can be represented as

In the experiment pure CO₂ at 1 atm was bubbled into a packed column irrigated by rapidly recirculating solution kept at 20°C and close to constant C_B. Find the fraction of entering CO₂ absorbed.

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CO₂(g) + OH (1)→ HCO3 (A) (B) with -TA = KCACB