Problem: Coal, which is primarily carbon, can be converted to natural gas, CH4, by the following reaction: C (s) + 2 H2 (g) ⇌ CH4 (g)   ΔHo= -74.6kJWhich of the following changes would increase the concentration of CH4?i. adding more Cii. decreasing the temperatureiii increasing the volumeA. i onlyB. ii onlyC. iii onlyD. i and ii   

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Coal, which is primarily carbon, can be converted to natural gas, CH4, by the following reaction: 

C (s) + 2 H(g) ⇌ CH(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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