Process Calculations GATE-2021

Q 1: The heat of combustion of methane, carbon monoxide, and hydrogen are P, Q, and R respectively. For the reaction below,

${\mathrm{CH}}_4+H_2O\rightarrow\mathrm{CO}+3H_2$

The heat of the reaction is given by

A) P-Q-3R
B) Q+3R-P
C) P-Q-R
D) Q+R-P

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Q 2: Formaldehyde is produced by the oxidation of methane in a reactor. The following two parallel reactions occur.

${\mathrm{CH}}_4+O_2\rightarrow\mathrm{HCHO}+H_2O$ ${\mathrm{CH}}_4+{2O}_2\rightarrow{\mathrm{CO}}_2+2H_2O$

Methane and oxygen are fed to the reactor. The product gases leaving the reactor include methane oxygen, formaldehyde, carbon dioxide, and water vapor. 60 mol/s of methane enters the reactor. The molar flow rate (in mol/s) of CH₄, O₂, and CO₂ leaving the reactor are 26, 2, and 4 respectively. The molar flow rate of oxygen entering the reactor is ______________  mol/s.

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