A researcher wishes to synthesize compound B from compound A using the reversible…
CHEMISTRY · Multi-part · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
A researcher wishes to synthesize compound B from compound A using the reversible reaction
A(g) ⇌ B(g)
At 298 K the equilibrium constant K is 4.8. A 1.00-mol sample of pure A is placed in a 1.00-L sealed container at 298 K. The system is allowed to reach equilibrium with no additional manipulation.
Answer the following questions.
(a) Calculate the equilibrium concentrations of A and B.
(b) Determine the percent yield of B relative to the initial amount of A.
(c) The researcher’s target is at least 85 % conversion of A to B. Evaluate, with quantitative reasoning, whether this goal is achievable without altering pressure, temperature, or composition after the start of the reaction.