CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
In a rigid vessel, the reaction
2P(g) ⇌ Q(g)
has reached equilibrium. A particulate diagram reveals 80 particles of P and 10 particles of Q in the vessel. What is the value of the equilibrium constant K?
(a) 1.25×10−1
(b) 3.91×10−4
(c) 1.56×10−3
(d) 1.56×10−2