In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as ___________________ ?
Correct answer: B. 1/KG = 1/KG + m/KL
- A. KG = 1/KG + m/KL
- B. 1/KG = 1/KG + m/KL
- C. 1/KG = 1/KL + m/KG
- D. KG = 1/KL + m/KG
Explanation
For gas-film and liquid-film resistances in series, the overall gas-phase resistance is 1/KG = 1/kG + m/kL, where m is the equilibrium-line slope. Option b represents this relation if its second KG is intended to be the individual gas-film coefficient kG.
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