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)

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

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

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.