Mass Transfer - Study Mode

[#301] In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when
Correct Answer

(D) A total condenser is used

[#302] Cox chart is useful in the design of
Correct Answer

(A) Distillation column

[#303] The Schmidt number which is defined as, μ/ρ D, is the ratio of the
Correct Answer

(A) Momentum diffusivity to the mass dif-fusivity

Explanation

Solution: The Schmidt number (Sc) is a dimensionless number in mass transfer operations. It is defined as the ratio of momentum diffusivity (kinematic viscosity, μ/ρ) to the mass diffusivity (D) . In mathematical terms, Sc = μ / (ρ D) . This number helps compare the relative effects of momentum and mass transport within a fluid.

[#304] In a packed tower, the value of HETP equals HTU OG , when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTU OG = overall gas phase height of a transfer unit)
Correct Answer

(C) Both A & B

[#305] The film penetration model of mass transfer was enunciated by
Correct Answer

(B) Toor and Marchello