In a rigid vessel at

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

Problem

In a rigid

5.00\,\text{L}

vessel at

298\,\text{K}

, the initial partial pressures are

1.20\,\text{atm}

for NO(g) and

0.80\,\text{atm}

for O

_2

(g). The gases react according to

2\,\text{NO}(g)+\text{O}_2(g)\rightarrow 2\,\text{NO}_2(g)

. After the mixture is returned to

298\,\text{K}

2.75\,\text{g}

of NO

_2

is isolated. What is the percent yield of NO

_2

for this experiment? (a) 49.0 % (b) 24.4 % (c) 18.2 % (d) 36.6 %