A sealed container initially contains only E(g) at a partial pressure of 0.80 atm

CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

A sealed container initially contains only E(g) at a partial pressure of 0.80 atm. For the reaction 2 E(g) ⇌ F(g), the partial-pressure-versus-time curve for E decreases until it levels off at 0.40 atm after 25 s. No other gases are present. Using the information from the graph, calculate the equilibrium partial pressure of F(g).

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