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CBSE Class 11-science Answered

The following reaction is at equilibrium:
4NH3 (g) + 3O2 (g) rightwards harpoon over leftwards harpoon 6H2O (g) + 2N2 (g)
How will the equilibrium shift if:
a) The volume is increased,

b) Helium gas is added

Asked by Topperlearning User | 27 Apr, 2015, 04:12: PM
Expert Answer
a) Since the volume is being increased, the pressure is dropping. In response, the equilibrium will shift right to attempt to make more moles of gas and increase the pressure.
 

b) The equilibrium will not change. To change the gaseous equilibrium, the partial pressures of at least one gas need to be changed. Since He is un-reactive with all of the gases present, the total pressure will change but the partial pressures will not be affected.

Answered by | 27 Apr, 2015, 06:12: PM
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