Nitrogen dioxide decomposes in the gas phase by the reaction

CHEMISTRY · Subjective · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

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

. A vessel initially contains 0.800 M

\text{NO}_2

and no products. After 25 s, the concentration of

\text{NO}

is found to be 0.120 M. Calculate the concentrations of (i)

\text{NO}_2

and (ii)

\text{O}_2

in the vessel at

t = 25\,\text{s}