Chemistry - Thermochemistry Question with Solution | TestHub
A factory is producing methanol based on the reaction:
CO + 2H2 → CH3OH; ΔH = -100 R
Hydrogen and carbon monoxide are obtained by the reaction:
CH4 + H2O → CO + 3H2
Three units of factory, namely, reformer (for the production of H2 and CO), reactor (for the production of methanol from CO and H2) and separator (to separate CH3OH from CO and H2) are schematically shown in the figure:
The flow of methanol from Valve-3 is 1000 mol/sec. The factory is so designed that 2/3 of the CO is converted to CH3OH. Assume that the reformer reaction goes to completion.
What is the flow of CO and H2 at valve-2?
Options:
Answer:
Solution:
Valve-2 carries the reactor output, which consists of CH₃OH and unreacted gases.
The amount of unreacted CO is calculated as 1500 - 1000 = 500 mol/s.
The H₂ used in the reaction is 2 × 1000 = 2000 mol/s.
Therefore, the H₂ remaining is 4500 - 2000 = 2500 mol/s.
This corresponds to option (b).
