Which of the following reactions will have the largest value of k at 298 k? a) caco3(s) → cao(s) + co2(g) δg° =+131.1 kj b) 2 hg(g) + o2(g) → 2 hgo(s) δg° = ‒180.8 kj c) 3 o2(g) → 2 o3(g) δg° = +326 kj d) fe2o3(s) + 3 co(g) → 2 fe(s) + 3 co2(g) δg° = ‒28.0 kj

Answer :

(a) The value of 'K' for the reaction is  

(b) The value of 'K' for the reaction is

(c) The value of 'K' for the reaction is

(d) The value of 'K' for the reaction is

Explanation :

The relation between the equilibrium constant and standard Gibbs free energy is:

where,

= standard Gibbs free energy

R = gas constant = 8.314 J/K.mol

T = temperature = 298 K

K = equilibrium constant

Now we have to calculate the value of 'K' for the following reactions.

(a)    

Thus, the value of 'K' for the reaction is

(b)    

Thus, the value of 'K' for the reaction is

(c)    

Thus, the value of 'K' for the reaction is

(d)    

Thus, the value of 'K' for the reaction is

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

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