Homework Answers
Since reaction is endothermic, providing heat will drive the reaction in such a direction that the extra heat is used up, according to the le chateliers principle.
Therefore, when temperature is increased, equilibrium tends to shift towards the right to use up the heat.
Therefore, concentration of ch4 decreases and thus the pressure of ch4 also decreases.
And when the temperature is decreased, equilibrium shifts to the left, thus decreasing the concentration of H2 and in turn, the pressure of H2 gas.
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