Chemistry

Problem

At a certain temperature the equilibrium constant for

2\,\text{SO}_2(g)+\text{O}_2(g)\rightleftharpoons2\,\text{SO}_3(g)

K_c=4.0

. A reaction vessel contains

[\text{SO}_2]=0.20\,\text{M}

[\text{O}_2]=0.10\,\text{M}

, and

[\text{SO}_3]=0.40\,\text{M}

. Which of the following correctly gives

Q_c

and predicts the direction in which the system will proceed? a)

Q_c = 8.0;\,

the system will shift toward reactants. b)

Q_c = 0.025;\,

the system will shift toward products. c)

Q_c = 40;\,

the system will shift toward reactants. d)

Q_c = 0.10;\,

the system will shift toward products.