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# Decrease in Mass

APCHEM-NFKXNI

Consider the following reaction at equilibrium in a sealed vessel:

$$A(s) + B(g) \rightleftharpoons C(s) + D(l) \quad \quad \quad \Delta H^o= 56 \text{kJ/mol}_{rxn}$$

Which of the following will decrease the mass of $D$ in the vessel?

A

Increasing the temperature.

B

Removing half the mass of $C$ from the vessel.

C

Increasing the vessel size.

D

$D$ is in a liquid state and not affected by changes to the equilibrium system.