Given the equilibrium constants for the following two reactions in aqueous solution at 25 ∘c hno2(aq)h2so3(aq)⇌⇌h+(aq) + no2−(aq)2h+(aq) + so32−(aq)kc = 4.5 × 10−4kc = 1.1 × 10−9 what is the value of kc for the reaction 2hno2(aq) + so32−(aq)⇌h2so3(aq) + 2no2−(aq)

Answer : The value of for the final reaction is, 184.09

Explanation :

The equilibrium reactions in aqueous solution are :

(1)        

(2)        

The final equilibrium reaction is :

Now we have to calculate the value of for the final reaction.

Now equation 1 is multiply by 2 and reverse the equation 2, we get the value of final equilibrium reaction and the expression of final equilibrium constant is:

Now put all the given values in this expression, we get :

Therefore, the value of for the final reaction is, 184.09

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