Number of moles of reactants > product... Therfore if pressure is increased. Equilibrium is disturbed according to LCP.... Equilibrium shift to the right (product) ...... If you want to understant the fundamental concept:
Take for example 2A + 3B = 4C Reactant: 5 moles (5 volumes) Product: 4 moles (4 volumes)
When pressure of a gas is increased, volume decreases! (Vice-versa)
If pressure is increased, volume decreases. Hence number of collisions INCREASES(constrain). Equilibrium shifts in such a direction so as to decrease the number of collision accordinf to LCP... This happens when number of paeticles decreases as equilibrium shift forward because the forward reaction is accompanied by a decrease in number of particles (5 to 4)
