Using standard free energy of formation values given in the introduction, calculate the equilibrium constant kp of the reaction cl2 (g) + 2no (g) ⇌2nocl (g)

Question

Riley Good

Chemistry

19 November, 17:05

Using standard free energy of formation values given in the introduction, calculate the equilibrium constant kp of the reaction cl2 (g) + 2no (g) ⇌2nocl (g)

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Melina Quinn · Answer 1

d G = 2 (dG NOCl) - 2 (dG NO)

= 2 * 66.08 - 2 * 87.6 = - 43.04 kJ / mol

dG = - 2.303 RT log K

-43.04 = - 2.303 RT log K

7.54 = log K

K = 3.42 * 10^7

Kp = k (RT) ^dn

d n = 2 - 1 - 2 = - 1

Kp = (3.42 * 10^7) (8.314 * 298) ^-1

Kp = 1.31 * 10^4