The G of atomic oxygen in 230.1 kJ/mol. Determine the equilibrium constant for t

Question

The G of atomic oxygen in 230.1 kJ/mol. Determine the equilibrium constant for the following reaction at standard thermodynamic conditions: O_2 (g) 2 O(g). a. 4.7 10^b. 2.3 10^c. 2.1 10^d. 2.1 10^e. 4.5 10^Carbon dioxide in the atmosphere in rainwater often lowers the pH to 5.0-5.6. The rainwater is a. neutral b. acidic c. basic. d. gray. e. poisonous The pH of a 0.250 M cyanuric acid solution is 3.690. What is the value of K? a. 8.17 10^b. 1.04 10^c. 1.67 10^d. 2.04 10^e. 5.10 10^What is the pH of a 0.010 M acetic acid solution? (K, for acetic acid is 1.76 10^) a. 2.00 b. 4.74 c. 2.74 d. 3.38 e. 6.74 An equilibrium that strongly favors products has

Explanation / Answer

Q9

dG = 230.1 kJ/mol = 230100 J/mol

find K for

O2(g) = 2O(g)

dGrxn = 2*(Gf atomic oxygen) = 2*230.1 = 460.2kJ/mol

so...

dGRN = -RT*ln(K)

K = exp(-dG/(RT))

K = exp(-460200/(8.314*298)) = 2.144*10^-81

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