Consider the gaseous equilibrium established in a sealed vessel at with a total…

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 gaseous equilibrium

2\text{A}(g)\rightleftharpoons \text{B}(g)

established in a sealed

10.0\,\text{L}

vessel at

500\,\text{K}

with a total pressure of

2.00\,\text{atm}

. The volume of the vessel is suddenly decreased to

5.00\,\text{L}

at constant temperature. Which statement best describes the system immediately after the compression? (a)

Q_{\!p}>K_{\!p}

and the reaction will shift toward reactants. (b)

Q_{\!p}=K_{\!p}

so no shift will occur. (c)

Q_{\!p}<K_{\!p}

and the reaction will shift toward products. (d)

Q_{\!p}<K_{\!p}

and the reaction will shift toward reactants.

Related theory

Chemical Equilibrium
Equilibrium
Le Chatelier's Principle
Factors Affecting Equilibria

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