Consider the following reaction: H2 (g) + I2 (g) 2 HI (g) Complete the following

Question

Consider the following reaction: H2 (g) + I2 (g) 2 HI (g) Complete the following table. Assume that all concentrations are equilibrium concentrations in M. T(C) [H2] [I2] [HI] [Kc] 25 0.0355 0.0388 0.922 340 4.60×102 M 0.386 M 9.6 445 4.80×102 M 4.66×102 M 50.2 You may want to reference ( pages 628 - 635) section 16.8 while completing this problem. Could you please show all steps including algebra? I'm doing something wrong and can't get the correct answers for the similar questions following others steps.

T(C) [H2] [I2] [HI] [Kc] 25 0.0355 0.0388 0.922 340 4.60×102 M 0.386 M 9.6 445 4.80×102 M 4.66×102 M 50.2

Explanation / Answer

(1) at 250C

Kc = [HI]2 / [H2][I2]

Kc = (0.922)2 / (0.0355*0.0388)

Kc = 617.

(2) At 340 0C

9.6 = (0.386)2 / (4.60*10-2)[H2]

[H2] = 0.337 M = 3.37 * 10-1 M

(3) At 445 0C

50.2 = [HI]2 / (4.80*10-2*4.66*10-2)

[HI] = 0.335 M = 3.35 * 10-1 M

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