For this problem, use the concept of Hess's Law to find the Kc of the desired equation
Configuring each equation:
a) M(g) ⇌ Z(g) Kc1 = 3.1 → Reverse then multiply the equation by 2. This will take the reciprocal then square of Kc
2 Z (g) ⇋ 2 M (g) Kc1-rev = (1/3.1)2 = 0.1041
b) 6 R(g) ⇌ 2 N(g) + 4 Z(g) Kc2 = 0.531 → Divide the equation by 2. This will take the square root of Kc
3 R(g) ⇌ N(g) + 2 Z(g) Kc2 = 0.531 = (0.531)1/2 = 0.729
Calculate the value of the equilibrium constanct, Kc, for the reaction
Q(g) + X(g) c 2 M(g) + N(g)
M(g) ⇌ Z(g) Kc1 = 3.1
6 R(g) ⇌ 2 N(g) + 4 Z(g) Kc2 = 0.531
3 X(g) + 3 Q(g) ⇌ 9 R(g) Kc3 = 14.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Chemical Equilibrium concept. You can view video lessons to learn Chemical Equilibrium. Or if you need more Chemical Equilibrium practice, you can also practice Chemical Equilibrium practice problems.