Question

Question 2 For parts of the free response question that require calculations clearly show the method used and the steps involved in arriving at your answers. You must show your work to receive credit for your answer. Examples and equations may be included in your answers where appropriate Casa Intel Concentration (M) I 0.015 Samples of three gases, He(g) Is(g), and HI(g) were combined in a rigid vessel. The Initial concentrations of H2(g) and 1(9) are given in the table above () The original value of the reaction quotient for the reaction of H2(g) and Is(9) to form HI(g) (before any reaction take place and before equilibrium a established, was 5.56. On the following green, blot the points representing the initial concentrations of all three gee. Labelcach point with the formule of the gas 0.080 30.070 0.060 Concentration (M) 0.050 0.040 0.030 0.020 0.010 0.000 Time

Answer 1

(a) (b) H₂ + 1 2 2HI 3 0.030 0.015 Initial Conch Q = 5.56 = CHIZ [th] [ I ] 5.5680.03 xo.015 - = [HI] = 0.05 m 0.03-x 0.015-x 0.05+2x INC 0.03-x = 0.02 (Given) = = 0.01 {HzJeg = 0.02m =) [12] = 0.015-0.01 = 5x103 m. [uileq = 0.05+2/0.01) - 0.07M 7 [HIJeg 0.06 0.05 H I initial o out concentration 0.03 initial C lea Orol initial ססס.ס Time

c) AH = -9.4 kJ/mol = It is exothermic reaction. Therefore, According to le-chatelier's Binciple, on decreasing the temperature, reaction goes forward ie to the right favouring the product. d) Since At is ove, so according to le-chateliers Principle value of ke increases on decreaking the temperature