Which of the following reactions increases production of dihydrogen from synthesis gas?
1
CH4 (g) + H2O (g) \(\rm \xrightarrow [Ni]{1270K}\) CO (g) + 3H2 (g)
2
C(s) + H2O (g) \(\rm \xrightarrow {1270K}\) CO (g) + H2 (g)
3
CO (g) + H2O (g) \(\rm \xrightarrow [Catalyst]{673K}\) CO2 (g) + H2 (g)
4
C2H6 + 2H2O \(\rm \xrightarrow [Ni]{1270K}\) 2CO + 5H2