A sealed container initially holds diatomic hydrogen gas at and

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A sealed

5.0\,\text{L}

container initially holds diatomic hydrogen gas at

1000\,\text{K}

and

2.0\,\text{atm}

. At this temperature,

40\%

of the

\mathrm{H_2}

molecules dissociate into atomic hydrogen according to

\mathrm{H_2\rightarrow 2H}

. The temperature remains constant. What is the final pressure in the container? (a)

1.2\,\text{atm}

(b)

3.6\,\text{atm}

(c)

2.8\,\text{atm}

(d)

2.0\,\text{atm}