The individual mass transfer co-efficients (moles/m2.s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling?
A. Liquid side
B. Gas side
C. Interfacial
D. Both liquid and gas side
Answer: Option B
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Both the individual resistances on gas side and the liquid side i.e., 1/KG and M/KL are same.. so both gas side and liquid side phase are controlling... not only gas side
So Option D should be correct