Question

Consider the following reaction:

A(g)⇌2B(g)
Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate simplifying assumptions.

Given: Kp= 1.6×10⁵ , find P_a, P_b; Given Kp= 2.0×10⁻⁴, find P_a, P_b.

I can't tell how to get the appropriate x values and equations for equilibrium pressures.

I know the Pressures are x and 1-2x but when I use the quadratic equation and get my x and plug them in It says its wrong. I saw it said something in the hints about Pb = sqrt(1-2x) but I don't understand where that comes from in the ice table. I am also having a really hard time understanding how the significant figures work with the large integers.

Answer 1