The equilibrium constant Kc 67 x 10Solution When you flip t

The equilibrium constant, Kc = 6.7 x 10

Solution

When you flip the direction of a reaction, you take the reciprocal of the equilibrium constant. When you multiply an equation by a coefficient, you raise the equilibrium constant to that power (1/2 in this case).
So your new constant is (1/6.7x10^-10)^1/2 = 7.74 x 10^4