2. Methane can be reacted with steam to produce carbon monoxide and hydrogen. The equation for this process is given below.
CH(g) + H2O(g) → CO(g) + 3H2(g)
The table below shows the enthalpy changes of formation for methane, steam
and carbon monoxide.
compound
Hf / kJ mol-1
CH4
-75
H20
-242
СО
-110

Use the Hf values in the table to calculate the enthalpy change for the reaction shown in the equation shown above.