11.37 6th edition

[CaminaB_1D]

I don't understand how to calculate K for part c of this problem, can someone please explain the reasoning for the answer that the solution manual comes to?

11.37 For the reaction N (g) + 3 H (g) ∆ 2 NH (g) at 223
400. K, K 41. Find the value of K for each of the following reactions at the same temperature:

(c) 2 N2(g) + 6 H2(g) ∆ 4 NH3(g)

[Kate Chow 4H]

You're given that k = 41 when N2+3H2 --> 2NH3. In part c of the question, the reaction is now 2N2 + 6H2 --> 4NH3. Notice that all of the coefficients were simply multiplied by 2 in part c. If you calculate K using products/reactants with the coefficients as the powers, you realize that the coefficients are doubled, so the powers are squared. Overall, for part c, k = 41^2.

[kamalkolluri]

When you multiply a certain reaction by a number n, the new K for the new equation is the old K to the power of n. So here, the equation is multiplied by 2 so the K of the reaction would be K^2 so 41^2.

[204929947]

I understand part C but can someone please explain part A and B