CHM ENG 142 Study Guide - Midterm Guide: Volumetric Flow Rate, Reaction Step, Limiting Reagent

• School: Berkeley
• Department: Chemical and Biomolecular Engineering
• Course: CHM ENG 142
• Professor: All

Document Summary

An inlet gas stream (v0 = 10 liter/min inlet volumetric flow rate and total concentration ct0 = 10 mol/liter) composed of a and b each at a mole fraction of 0. 2 with the rest consisting of an inert. A splitter sends 6 liter/min of the inlet stream to the pfr and 4 liter/min to the cstr. 1. 5 a + b c + d r = k cb k = 3 min-1. State at least two reasons for your conclusion. No, this is not an elementary step: fractional molecules cannot react in a single irreducible step, the reaction stoichiometry is not reflected in the rate law. Although the inlet contains equal amounts of a and b, more moles of a are needed for each reaction event, so a will be depleted first. Fb0 = yb0(ft0) = yb0(v0ct0) = 0. 2 (4 l/min * 10 mol/l) = 8 mol/min b entering the cstr.