Ask Question
27 February, 05:14

Consider the steps in coal gasification: C (coal) + H2O (g) → CO (g) + H2 (g) ΔH°rxn = 129.7 kJ CO (g) + H2O (g) → CO2 (g) + H2 (g) ΔH°rxn = - 41 kJ CO (g) + 3H2 (g) → CH4 (g) + H2O (g) ΔH°rxn = - 206 kJ Calculate the heat of reaction, ΔH°rxn, for overall reaction for the production of methane, CH4.

+1
Answers (1)
  1. 27 February, 05:44
    0
    The answer to your question is ΔHrxn = 0 kJ

    Explanation:

    Process

    1. - Multiply Equation 1 by 2

    2C (coal) + 2H₂O ⇒ 2CO (g) + 2H₂ ΔH rxn = 259.4 kJ

    2. - Sum equation 2

    CO (g) + H₂O ⇒ CO₂ (g) + H₂ (g) ΔHrxn = - 41 kJ

    Result

    2C + 3H₂O + CO ⇒ 2CO + 3H₂ + CO₂ ΔHrxn = 218.4 kJ

    Simplification

    2C + 3H₂O ⇒ CO + 3H₂ + CO₂

    3. - Sum equation 3

    CO (g) + 3H₂ (g) ⇒ CH₄ (g) + H₂O (g) ΔHrxn = - 218.4 kJ

    Result

    2C + 3H₂O + 3H₂ + CO ⇒ CO + 3H₂ + CO₂ + CH₄ + H₂O

    Simplification

    2C + 2H₂O ⇒ CO₂ + CH₄ ΔHrxn = 0 kJ
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Consider the steps in coal gasification: C (coal) + H2O (g) → CO (g) + H2 (g) ΔH°rxn = 129.7 kJ CO (g) + H2O (g) → CO2 (g) + H2 (g) ΔH°rxn ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers