4u c7.5 Equilibrium Calculation Exercise 1

# 4u c7.5 Equilibrium Calculation Exercise 1 - 3(g) were...

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SCH 4U Chapter 7 Chemical Systems in Equilibrium Equilibrium Calculation Exercise 1 Nelson: Section 7.2, 7.5 1. Calculate the number of moles of HI (g) , H 2(g) and I 2(g) at equilibrium if 2.0 mol of H 2(g) and 2.0 mol of I 2(g) are mixed in a 0.50 L container. (K e = 50) H 2 (g) + I 2 (g) ↔ 2 HI (g) 2. In a 1.0 L container, 0.80 mol of NH 3(g) , 0.20 mo1 of H 2(g) and an unknown amount of N 2(g) are at equilibrium. If the K e for the reaction equals 2.0 x 10 2 , calculate the concentration of N 2(g) N 2 (g) + 3H 2 (g) ↔ 2NH 3 (g) 3. If 1.0 mo1 of PCl 5(g) and 0.10 mol of PCl 3(g) are allowed to come to equilibrium in a 1.0 L container, calculate the equilibrium concentration of each reactant and product species. The K e for the reaction is 0.040. PCl 5 (g) ↔ PCl 3 (g) + Cl 2 (g) 4. An unknown amount of NH 3(g) was added to a 1.0 L container. When the reaction reached equilibrium, the concentration of N 2(g) was found to be 2.0 mol/L. How many moles of NH
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Unformatted text preview: 3(g) were added? (Ke = 2.0) N 2 (g) + 3H 2 (g) 2NH 3 (g) 5. a) Calculate Ke for the following reaction. H 2 (g) + CO 2 (g) H 2 O (g) + CO (g) [0.117] [0.117] [0.133] [0.133] b) At equilibrium some additional H 2 O (g) was injected into the mixture. Later a new equilibrium occurs with the H 2(g) concentration at 0.150 mol/L. If the volume of the container was 10.0 L, how many moles of H 2 O (g) were injected? 6. If 3.0 mo1 of HI (g) , 2.0 mol of H 2 (g) and 2.0 mo1 of I 2 (g) are placed in a 1.0 L container, calculate the equilibrium concentration of HI (g) . (K e = 50) H 2 (g) + I 2 (g) 2HI (g) 7. Equilibrium exists between n-butane and isobutane when [n] = 0.20M and [iso] = 0.50M. What are the equilibrium concentrations of n-butane and isobutane if 2.00 mol/L of isobutane are added to the original mixture?...
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## This note was uploaded on 05/31/2011 for the course CHEM 4U taught by Professor Jargin during the Spring '11 term at York University.

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