Coal, which is primarily carbon, can be converted to natural gas, CH4, by the following reaction:
C (s) + 2 H2 (g) ⇌ CH4 (g) ΔHo= -74.6kJ
Which of the following changes would increase the concentration of CH4?
i. adding more C
ii. decreasing the temperature
iii increasing the volume
A. i only
B. ii only
C. iii only
D. i and ii
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