In which of the following reactions will the amount of product at equilibrium increase if the total gas pressure is raised from 5 atm to 20 atm? Find the best possible answer.

N2(g) + O2(g) < -- > 2 NO(g)

options:

1. Reactants: 2 moles of gases and Products: 2moles of gases but with higher energy, therefore equilibrium shift to the right


2. Reactants and products have equal moles in the gas phase, but the reactants have a less restrictive motion than the products, therefore the equilibrium shifts to the left


3. This is an endothermic reaction, therefore the equilibrium should shift to the products side.


4. Reactants: 2 moles of gases. Products: 2 moles of gases.

5. Both sides have the same number of moles of gases so there will be no shift in the equilibrium.