calculate the standard free energy change (kJ/mole)?

Question

For the reaction whose reactants and products are:



reactants: NO (g) H2O (g)


products: NH3 (g) O2 (g)


calculate the standard free energy change (kJ/mole) from the standard free energies of formation.

Answer 1

OK...First you need to write the BALANCED equation for this reaction.

You'll use Hess's Law to calculate the free energy change for the reaction. You'll have to find a table in your text (often in the appendix) that has the standard free energies of formation of each of these compounds. Add up all the free energies of formation of the products (multiplying each on by its coefficient in the balanced equation), and SUBTRACT the free energies of formation of the reactants (again, any multiplied by their coefficients). That should get you there...

Answer 2

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