Question

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1. A reaction mixture at 350 C was found to have the following concentrations [HI] = 0.024 M; [H] =0.025 M and (0) = 0.025 M Ha(g) +13(g) 2 HI(g), K = 57.0 a) Determine whether the mixture is at equilibrium or not b) If the mixture is not at equilibrium, tell the direction of the shift to reach equilibrium, and calculate the equilibrium concentrations of Hy, l, and HI. 2. Consider the Haber Process for the synthesis of ammonia from hydrogen and nitrogen: 3H2(g) +N() = 2 NH;) Show that the reaction would shift to the right if the pressure is doubled. 3. a) How would you drive the following reaction to the right to form more products: CO(g) + H20 (g) = 00:(@)+H; (g) AH-403 kJ Ans: b) One of the products is a high value substance'. Which one and what is it used for!

Answer 1

classmate Date Page H, (g) + I, (g) = 2HI(g) at this point, [HI] = 0.024 M. - [H₂ = 0.025 M I I₂] = 0.025 M. Reaction quotient = 0.02 [H₂] [12] (0.024) 0.025X0.025 10.026 1 0.025 -6.96) = 0.9216 Since Rekke, reaction is not at equilibrium 6 As to Qe <Kc reaction shifts forward right hand side

say, x mole each of Iz dissociate further reach equilibrium. t to H₂(g) + Iz (g) 2 H Ilg 0.025-x 0.025 0.024+22 (0.024 +22) (0.025 )x10.0252) - 0.024 +22 = N57 = 7.55 0.025-x = 0.024 +22=0.18875-7,554 9,552= 0.18875-0.024 = 0. 16475

La Page At equilibrium, [HI] = 0.024 + 2x0.017 - 20.058M [ H2) = [12] = 0.025-0.017 -0.008 M Q2. 3H₂(g) + N2(8) 210H₃ (2) Ang = no. of molen on product ride In - no. of moles on reactant ride - 2-(3+1) = -2 When pressame is increased the reaction will shift to that side which has Tesser number of molecules. As can be seen valle, number from Ding of molecules

decreased from left to right. Hence when preso is increase a this reach shifts to right side. 3.@ colg) + H₂O(g) coda) SH= -40.3KJ 130 * dince no. of molecules are same on both sides, so no effect of press me. * The following methods can be wred to drive the reaction to the right - 1 P Increase concentration cola). A H₂O(g). of i) Removal or both of coalg) or H₂ g from the containe i) Reducing the temperature, as the reaction is exothermice

3. (6) He is the high value darbistance. It is used in y synthesis of ammonia ii) petroleum refining c) as a propellant for nuclear powered rockets.