Question

The overall chemical equation resulting from the sum of the following three steps is 2C(s) + 2H2O(g) → 2CO(g) + 2H2(g) CO(g) + H2O(g) → CO2(g) + H2(g) CO(g) + 3H2(g) → CH4(g) + H2O(g) a. 2C(s) + 2H2O(g) → CO2(g) + CH4(g) b. 2C(s) + 3H2O(g) → CO(g) + CO2(g) + 3H2(g) c. 2C(s) + H2O(g) + H2(g)→ CO(g) + CH4(g) d. 2CO(g) + 2H2(g) → CH4(g) + CO2(g) e. 2C(s) + CH4(g) + 3H2O(g) → 3CO(g) + 5H2(g)

Answer 1

2C(s) + 2H2O(g) → CO2(g) + CH4(g) (option a)

Step-by-step explanation:

Step 1: Data given

C(s) + 2H2O(g) → 2CO(g) + 2H2(g)

CO(g) + H2O(g) → CO2(g) + H2(g)

CO(g) + 3H2(g) → CH4(g) + H2O(g)

Step 2: balance the reactions

2C(s) + 2H2O(g) → 2CO(g) + 2H2(g)

CO(g) + H2O(g) → CO2(g) + H2(g)

CO(g) + 3H2(g) → CH4(g) + H2O(g)

Step 3: Summing the reactions

2C(s) + 2H2O(g) + CO(g) + H2O(g) + CO(g) + 3H2(g) → 2CO(g) + 2H2(g) + CO2(g) + H2(g) + CH4(g) + H2O(g)

Step 4: Simplify the reaction

2C(s) + 3H2O(g) + 2CO(g) + 3H2(g) → 2CO(g) + 3H2(g) + CO2(g) + CH4(g) + H2O(g)

2C(s) + 2H2O(g) → CO2(g) + CH4(g) = option a