Project ForgeSign up free
Mass Transfer
Mass Transfer Operations
GATE 2020
Hard

Two-film theory applies for absorption of a solute from a gas into a liquid. The gas-side mass transfer coefficient (mol/m²·s) is 0.1, and liquid-side is 3. Equilibrium: y*=2x. The ratio of the liquid-film mass transfer resistance to the overall resistance is

  • A0.0161
  • B0.0322
  • 0.0625
  • D0.0645

Explanation

1/Ky=1/kG+m/kL=1/0.1+2/3=10+0.6667=10.6667. Liquid-film fraction of overall (gas-phase-based) resistance=(m/kL)/(1/Ky)=0.6667/10.6667=0.0625.

Source: GATE CH 2020 (2020)

This question is part of a 15-day revision cycle — sign in and Project Forge will bring it back the day before you'd forget it.

Start revising free