Answer to Question #112193 in General Chemistry for Maria

Question

(1) When Fe2O3(s) reacts with H2(g) to form Fe3O4(s) and H2O(g) , 2.00 kJ of energy are evolved for each mole of Fe2O3(s) that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation. Note that the answer box for the energy term is case sensitive.

Use the SMALLEST INTEGER coefficients possible and put the energy term (including the units) in the last box on the appropriate side of the equation. If a box is not needed, leave it blank.

(2) When CO2(g) reacts with H2(g) to form CO(g) and H2O(g), 41.2 kJ of energy are absorbed for each mole of CO2(g) that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation. Note that the answer box for the energy term is case sensitive.

Use the SMALLEST INTEGER coefficients possible and put the energy term in the last box on the appropriate side of the equation. If a box is not needed, leave it blank.

Answer 1

3Fe₂O₃ + H₂ = 2Fe₃O₄ + H₂O + 6 kJ