For Ni(s) + 4CO(g) Ni(CO)4(g), K_p = 1.5x10^-2 atm^-3 at 330 K. Using R = 0.0821 L atm mol^-1 K^-1, K_c in L^3 mol^-3 is approximately

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For $Ni (s) + 4 CO (g) Ni (CO) X_{4} (g)$ , $K_{p} = 1.5 \times 1 0^{- 2} at m^{- 3}$ at 330 K. Using $R = 0.0821 L atm mo l^{- 1} K^{- 1}$ , $K_{c}$ in $L^{3} mo l^{- 3}$ is approximately

Only gases count:

Δ n = 1 - 4 = - 3

(solid nickel is ignored).

K_{p} = K_{c} (RT)^{- 3}

, so

K_{c} = K_{p} (RT)^{3}

with

RT = 0.0821 \times 330 = 27.09

K_{c} = 0.015 \times (27.09)^{3} = 298 L^{3} mo l^{- 3}