How do you balance the equation for the reaction with an energy term in kcal as...

Question

Question

How do you balance the equation for the reaction with an energy term in kcal as part of the equation?

When N2(g) reacts with O2(g) to form NO2(g), 15.9 kcal of energy is absorbed for each mole of N2(g) that reacts.

When Fe2O3(s) reacts with Al(s) to form Al2O3(s) and Fe(s), 204 kcal of energy is evolved for each mole of Fe2O3(s) that reacts.

When CO2(g) reacts with H2(g) to form CO(g) and H2O(g), 9.85 kcal of energy is absorbed for each mole of CO2(g) that reacts.

Answer 1

Answer #1

When energy is absorbed it will added with left hand side reactant.

When energy is released or evolved it will be added with right hand side product.

a) N46+202 (9) —> 2N02 9) As heat is absorbed, it will on L.H.S. energy N₂ (9) + 20 (9) + 15.9 kcal 2 NO₂(g) | N2(g) +202 (9)

c) CO2 (9)+H2(g) +9.85 kcal → C009) 7. H2009)

Answer 2

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