A.) What is the effect of adding helium gas (at constant volume) to an equilibri

Question

A.) What is the effect of adding helium gas (at constant volume) to an equilibrium mixture of the reaction: CO(g)+Cl2(g)?COCl2(g)?

B.) How does an increase in temperature affect the equilibrium concentration of the Ca(OH)2 and the equilibrium constant for the following reaction?
CaO(s) + H2O(l) ? Ca(OH)2(aq)           ?H° = - 82 kJ ?

C.) What is ?n for the following equation in relating Kc to Kp?

2 NH3(g) ? N2(g) + 3 H2(g)? Thank you! I have been trying to figure these out for quite some time now!

Explanation / Answer

A. When an inert gas ( Helium) is added to the system at comstaco volume. There is no change in equilibrium constant.

B. As ?H is negative means energy is releasing during the reaction. So when you increase the Temperature reaction will go backward.

C. Kp = Kc*(R*T)^?n

Where ?n = ( moles of gas at product side - moles of gas at reactant side ).

In given reaction ?n = ( 2-4) = -2  

Kp = Kc*(R*T)^-2

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