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Worksheet 2-3 - Calculations Involving the Equilibrium Constant Page 1 (O.oqo) - 0.15 b) Calculate the value of Keq at 500C. a) Write the equilibrium constant expression (Keg ) (X21=O.37M, [Y21-O.S3M and [XY31-O.090M (61) 2 SD 2. Given the equilibrium equation: Chemistry 12
X2(g) + 3Y2(g) 2XY3(g) at a temperature of 50°C, it is found that when equilibrium is reached that: [X2] = 0.37 M, [Y2] = 0.53 M and [XY3] = 0.090 M a) Write the equilibrium constant expression (Keq) b) Calculate the value of Keq at 50°C. Answer _____
1) Calculate Kc for the following equilibrium given the results of an analysis of the equilibrium mixture which show that the concentration of SO2 = 0.230, O2 = 1.370, and SO3 = 0.920 mol dm-3. 7) In the following equilibrium, Kc = 54.1 at a particular temperature.
Write an expression for the equilibrium constant (Kc) and derive its units in each of the following equilibria.
Write an expression for the equilibrium constant (Kc) and derive its units in each of the following equilibria.
2] 2 [O 2] (1 mol dm –3)2 (0.2 mol dm–3) (1 mark for value, 1 mark for units) (b) The temperature has been decreased. Therefore the equilibrium will shift in favour of the exothermic reaction (to the right) in order to oppose the temperature decrease. Therefore the value of K c will increase. (1 mark) Making an ester; CH 3COOH(aq) + CH 3OH ...
A full version of this question and answer sheet is available from the ‘downloads’ section below. An editable version is also available. Quiz your students on the equilibrium constant and how to use it with these Starter for ten questions.
