Q56

Solute A is absorbed from a gas into water in a packed bed operating at steady state. The absorber operating pressure and temperature are 1 atm and 300 K, respectively. At the gas-liquid interface

le fractions of A, respectively. At a particular location in the absorber, the mole fractions of A in the bulk gas and in the bulk water are 0.02 and 0.002, respectively. If the ratio of the local individual mass transfer coefficients for the transport of A on the gasGATE 2025

Chemical Engineering

ute A is absorbed from a gas into water in a packed bed operating at steady state. The absorber operating pressure and temperature are 1 atm and 300 K, respectively. At the gas-liquid interface yᵢ=1.5 xᵢ where yᵢ and xᵢ are the interfacial gas and liquid mole fractions of A, respectively. At a particular location in the absorber, the mole fractions of A in the bulk gas and in the bulk water are 0.02 and 0.002, respectively. If the ratio of the local individual mass transfer coefficients for the transport of A on the gasGATE 2025 Chemical Engineering side (𝑘𝑦) to that on the water-side (kₓ) ky/kₓ=2 then yᵢequals _____________ (rounded off to 3 decimal places) (2 Marks) Ans. (0.014 to 0.017)