249 8 Chemical Eqm Ex Ans

249 8 Chemical Eqm Ex Ans - 249 College Chemistry I...

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Unformatted text preview: 249 College Chemistry I Chemical Equilibrium - Supplementary Exercise 1. The following reversible reaction N 2 (g) + 3H 2 (g) 2NH 3 (g) was studied at 500 C. At equilibrium, the partial pressures of N 2 , H 2 and NH 3 are 6.0 x 10-3 atm, 1.0 x 10-2 atm and 3.0 x 10-7 atm respectively. (i) Calculate K p for the equilibrium at 500 C. K p = 1.5 x 10-5 (ii) Hence determine the value of K C . Kc = Kp(RT)- n = 0.06036 2. Given the following reactions and their corresponding equilibrium constants at 25 C: (a) H 2 (g) + Cl 2 (g) 2HCl (g) K 1 = 2.5 x 10 33 (b) N 2 (g) + 3H 2 (g) 2NH 3 (g) K 2 = 6.0 x 10 5 (c) N 2 (g) + 4H 2 (g) + Cl 2 (g) 2NH 4 Cl(s) K 3 =3.9 x 10 70 Hence find the equilibrium constant, K for the following reaction: NH 3 (g) + HCl (g) NH 4 Cl(s) K = 5.099 X 10 15 3. Consider the following reversible reaction 249/Chemical Equilibrium Exercise 1 2SO 2 (g) + O 2 (g) 2SO 3 (g) (a) An 1 dm 3 reaction vessel was found to contain 0.11 mole of SO 2 , 0.12 mole of SO 3 and 0.05 mole of O 2 . What is the equilibrium constant, K c , of this closed system?...
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249 8 Chemical Eqm Ex Ans - 249 College Chemistry I...

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