1 Do H2 and O2 delta G is 57 kcalmol react spontaneously to

1. Do H₂ and O₂ (delta G is -57 kcal/mol) react spontaneously to make water? Why or why not? What prevents it from happening instantly on its own?

2. Define chemical equilibrium with regards to reaction concentrations and how a reaction will proceed in the cell (i.e. if starting from 1 M of reactants/products with a K_eq of 100).

Solution

(1)

Answer:

Hydrogen gas combines with oxygen gas explosively.

Hydrogen is oxidized to water instantly with the release of energy

2H2 + O2 ----> 2 H2O

This exothermic reaction yields 232 kJ/mol of water formed.