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{"ops":[{"insert":"Methanol is a very important starting material in the chemical industry. A key reaction in its "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"manufacture is:"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"CO(g) + 2H2(g) \u21cc CH3OH(g) + 52 kJ"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"a) Write an expression for the equilibrium constant K"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"i)  In an equilibrium mixture at 100\u00b0C the following gas concentrations were found: "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"CO : 3.76 x 10-3 mol L-1 H2: 4.30 x 10-3 mol L-1"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":" "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"CH3OH: 4.17 x 10-10 mol L-1"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":" Calculate the value of K(eq) at 100\u00b0C"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"ii) Calculate the concentration of methanol produced by the reaction in (b), with the "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"following reactant concentrations:"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"CO: 2.13 x 10-3 mol L-1"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":" H2: 1.4 x 10-3 mol L-1"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"b) Define Le Chatelier\u2019s Principle"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"c) Explain the effect on the equilibrium concentration of methanol if the temperature "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"is raised"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"d) A safety valve in the reaction vessel is temporarily opened to release the high "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"pressure gasses. Describe the effect it has on the equilibrium position and the "},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":"equilibrium constant K"},{"insert":"\n"},{"insert":""},{"insert":"\n"},{"insert":""},{"insert":"\n"}]}

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