## Chemistry and Chemical Reactivity (9th Edition)

The concentration of reacted N2O4 $0.010/2-0.0042=0.0008\ M$ By stoichiometry: $[NO_2]=2\times reacted=0.0016\ M$ $K=[NO_2]^2/[N_2O_4]$ $K=0.0016^2/0.0042$ $K=6.09\times10^{-4}$