Let’s compare an average solution vs. a solution for a typical B.K. Dutta problem:

Uses ( N_OG ) formula, plugs numbers, gets 4.2 meters. No unit check, no equilibrium line drawing, no comment on whether ( k_G a ) and ( k_L a ) are consistent.

[best] — Mass+transfer+b+k+dutta+solutions+better

Let’s compare an average solution vs. a solution for a typical B.K. Dutta problem:

Uses ( N_OG ) formula, plugs numbers, gets 4.2 meters. No unit check, no equilibrium line drawing, no comment on whether ( k_G a ) and ( k_L a ) are consistent.