Answer:
692.52
Explanation:
First Reaction;
A (g) = 2 B (g)
Kp is given as; (PB)² / (PA)
But Kp = 0.0380
So we have;
(PB)² / (PA) = 0.0380
Second Reaction;
4 B (g) = 2 A (g)
Kp is given as; (PA)² / (PB)⁴
The relationship between Kp expressions for both reactions is given as;
Second Reaction Kp = 1 / (First Reaction Kp)²
Second Reaction Kp = 1 / (0.0380)² = 1/0.001444
Second Reaction Kp = 692.52