According to Le Chatelier’s Principle, once a system in equilibrium is disturbed, the system will readjust and relieve the stress introduced to maintain its equilibrium.
The factors that affect equilibrium are:
Introducing more gaseous reactants to the system will put stress on the reactant side of the system. To relieve the stress, the equilibrium will shift to the product side.
Since H2 is a gaseous reactant, the equilibrium will shift forward and favor CH4.
Choice B is correct.
Coal, which is primarily carbon, can be converted to natural gas, primarily CH4, by the following exothermic reaction:
C(s) + 2 H2(g) ⇌ CH4(g)
Which of the following will favor CH4 at equilibrium?
a. adding more C to the reaction mixture
b. adding more H2 to the reaction mixture
c. raising the temperature of the reaction mixture
d. lowering the volume of the reaction mixture
e. adding a catalyst to the reaction mixture
f. adding neon gas to the reaction mixture
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