Question

How do you calculate the energy required to produce 7.00 mol Cl2O7 on the basis of the following balanced equation: 2Cl2(g)+7O2(g)+130kcal→2Cl2O7(g)?

Answer 1

Answer:

455 Kcal

Explanation:

2Cl2(g) + 7O2(g) + 130kcal → 2Cl2O7(g)

Rearranging we get,

2Cl2(g) + 7O2(g)  → 2Cl2O7(g) Δ H = 130 kcal . mol⁻¹

So for per mol reaction will be as above.

In case of 7 mols of product, we need 7/2 mole ratio x 130 = 455 Kcal