Question

5. Consider the reaction: N: (g) + 3 H2(g) = 2 NH, (g) + heat Determine the effects of the following stresses on the equilibrium. State whether the equilibrium will shift to the left, to the right or not at all. a. Increase [N:] b. Decrease [NH] c. Decrease [H:] d. Increase temperature e. Decrease total pressure f. Decrease volume g. Add helium in a container with fixed volume h. Add helium in a container with variable volume

Answer 1

Given reaction N2(g) + 3H₂(g) + 2NH₃(g) + heat Let the concentrator H2(g) in a and b respectivly he concentration of W2 (9) and in the starting of reaction. and at the extent of reaction. in N2(g) + 3H₂(g) → 2NH3(g) + heat to a bo at équim (a.n) (b-32) 2x [NW3]2 equlibrium Cmshant Ke= [Hz] ² [N, 06-30/33 (aaye) where V is the tehal volume = 42² & ava 12 (6-37) 3 la- 42² v² (aan) (6-323 tohal mole number V in eqlibrium = 9-21+ -33+ 2 atban i Kp = Ia-n at6-2n) atb-2m 40² x P2 & (atbrang (atb-2x)2 (b.zn3 (an) pt. 40² (a+b-29) ² (b-34) (arn) p?

so, from ' this two equation, kp and ke, we answer all the question, can be able to ay so, if weing s, if we increase [Na] in the expresston Kc = - 4x²2 Cann) (brang 3 with increasing [Na] denominatore Encreases, so, for keeping Ke Constant a increases o and formation of WH₂ welll be faffurable. So, eculiarium will shift toward right. b) Decrease of NH3: backword reaction will be favourable i equilibrium shift toward teft. > Decrease of [hi]: will be del disfavourable for the formation of NH3, so equilibrium Shift toward left, d) Increase tempo: As it is an exothermie process increase temp will leads the equilibrium toward left. ex Decrease of total pressure from the expression of kp we can see. Kp= 402 (a tb-2012 (b-in) (arn) p2 so if we denease the pressure denominator weetl decrease, to keep Kp Constant a also decreme, so equilibrium will shift toward left. el and hilium in a container with fired volume : Im fired volume equilibrium will not be disturbed. u helium ma container with variable volume oso home will moreene to keepke Constant malso decreme and eam librium will shift towards hold site