A sealed container initially contains of and no

CHEMISTRY · Single correct · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

A sealed

2.0\,\text{L}

container initially contains

0.800\,\text{atm}

\mathrm{N_2O_4(g)}

and no

\mathrm{NO_2(g)}

. After equilibrium is established at the same temperature, the partial pressure of

\mathrm{NO_2}

is measured to be

0.350\,\text{atm}

. For the reaction

\mathrm{N_2O_4(g)} \rightleftharpoons 2\,\mathrm{NO_2(g)},

what is the value of

K_p

at this temperature? (a)

0.28

(b)

0.56

(c)

0.20

(d)

0.15