CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
Consider the equilibria below, all at the same temperature.
1) D(g) ⇌ 2 E(g); K1=2.0×10−2
2) E(g) ⇌ F(g); K2=?
The overall reaction
D(g) ⇌ 2 F(g)
has an equilibrium constant Koverall=5.0×101. What is the value of K2?
(a) 2.5×103
(b) 7.1×100
(c) 5.0×101
(d) 1.25×103