A chemist is comparing the equilibrium position for the reaction 2 G(g) ⇌ H(g) Three…
CHEMISTRY · Multi-part · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
A chemist is comparing the equilibrium position for the reaction
2 G(g) ⇌ H(g)
Three identical containers (A, B, and C) at the same temperature are illustrated with particulate views. The total number of particles in each container is the same.
• A: 10 G molecules, 5 H molecules
• B: 6 G molecules, 11 H molecules
• C: 2 G molecules, 15 H molecules
Treat the particle counts as proportional to molar concentrations because container volume is identical in all cases.
(a) Calculate an approximate numerical value of K for each container using the particle counts as concentration surrogates.
(b) Rank the three containers from smallest to largest K value.
(c) The literature value of K for this reaction at the given temperature is 4.0. Which container is closest to the literature value, and how does the particulate information support your choice?