For 2NO(g) + O2(g) 2NO2(g) at 500 K (use R = 0.0821 L atm mol^-1 K^-1), which statements are correct?

If K_c = 8.2x10^3 L mol^-1, then K_p approx 2.0x10^2 atm^-1

JEE Main levelOne or more correct optionsDifficulty 2 of 3ce075

For $2 NO (g) + O X_{2} (g) 2 NO X_{2} (g)$ at 500 K (use $R = 0.0821 L atm mo l^{- 1} K^{- 1}$ ), which statements are correct?

A $K_{p} = K_{c} / (RT)$
B $K_{c}$ has units of $mol L^{- 1}$
CIf $K_{c} = 8.2 \times 1 0^{3} L mo l^{- 1}$ , then $K_{p} \approx 2.0 \times 1 0^{2} at m^{- 1}$
D $K_{p} = K_{c} RT$

Δ n = 2 - 3 = - 1

, so

K_{p} = K_{c} / (RT)

and

K_{c}

has units

L mo l^{- 1}

(statements 1 true, 2 and 4 false). Numerically

RT = 41.05

and

K_{p} = 8200/41.05 = 199.8 at m^{- 1}

, so statement 3 is true.