R n˚

Name

Chemical reaction

$\Delta H_{298\text{K}}^o$ (kJ/mol)

$\Delta G_{298\text{K}}^o$ (kJ/mol)

R1

Water-gas shift reaction

$CO+H_{2}O\leftrightarrow C{O}_2+H_2$

−41.1

−28.5

R2

Water-gas (primary) reaction

$H_{2}O+C\leftrightarrow H_2+CO$

131.3

91.2

R3

Methanation reaction

$C+2H_2\leftrightarrow C{H}_4$

−74.8

−50.8

R4

Boudouard reaction

$C{O}_2+C\leftrightarrow 2CO$

172.8

119.8