H15 MMK Exercise 15.54 Enhanced with Feedback Exercise 15.54 Enhanced with Feedb

Question

H15 MMK Exercise 15.54 Enhanced with Feedback Exercise 15.54 Enhanced with Feedback For the following reaction, K 255 at 1000 K You may want to reference (a pages 693-TO2 Section 15.8 while completing this problem. O Type here to search Part A If a reaction initially a Coconcentration 0.1510 and a concentration ofa 171 at 1000K wat the is contains concentration of CO at 1000 K? Express your answer in molarity to three significant figures. ICO a 1.52.10 2 M Submit Answers Gave up Correct Finding the equilibrium concentration of Cir required the cons of an ICE table to determine the change in each compound at vulbrium 510 0 17 These changes were then plugged into the equilbrium constant equation and a quadratic formula uras used to solve z

Explanation / Answer

Ans. Given,

            Initial [CO] = 0.1510 M

            Change = -X

            Equilibrium [CO] = 0.1510 – X

Also, calculated equilibrium [CO] = 1.52 x 10-2 M = 0.0152 M

So,

            0.1510-X = 0.0152

            Or, -X = 0.0152 – 0.1510 = - 0.1358

            Hence, X = 0.1358

Part B: Equilibrium concentration of [Cl2] = 0.171- X

Putting the value of X = 0.1358 in above statement,

            [Cl2] = 0.171 – X = 0.171 – 0.1358 = 0.0352

Therefore, at equilibrium [Cl2] = 3.52 x 10-2 M

Part C: At, equilibrium []CoCl2] = X = 0.1358 M = 1.358 x 101 M

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