In the absorption of a solute gas from a mixture containing inerts in a solvent, it has been observed that the overall gas transfer coefficient is nearly equal to the individual gas film transfer coefficient. It may therefore be concluded that:
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Sparingly soluble gases often show gas-film control in absorption processes.
The transfer rate can be increased substantially by reducing the thickness of the liquid film
The transfer rate can be increased substantially by reducing the thickness of the gas film
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The Correct Option isB
Solution and Explanation
Low gas solubility in a solvent results in the gas film controlling the transfer rate, a condition where the overall gas transfer coefficient equals the gas film coefficient.