Water gas is produced by the action of superheated steam on red hot coke.
` C(s) + H_2O(g) + 131.4 kcal = underset("water gas")(CO(g) + H_2(g))`
`Delta H_f ` for `H_2O(g) = -241.8 kJ "mole"^(-1)` . Calculate `Delta H_f` for CO(g)

Explanation

To calculate the enthalpy of formation (ΔH_f) for CO(g) from the given reaction, we can follow these steps:

### Step 1: Write the given reaction
The reaction for the formation of water gas is:
\[ C(s) + H_2O(g) + 131.4 \text{ kcal} \rightarrow CO(g) + H_2(g) \]

### Step 2: Convert kcal to kJ
We need to convert the energy from kcal to kJ for consistency with the given ΔH_f value for H2O(g).
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