For the gas-phase reaction $CH X_{4} (g) + H X_{2} O (g) CO (g) + 3 H X_{2} (g)$ , the ratio $K_{p} / K_{c} = 3600$ when pressures are in atm and concentrations in $mol L^{- 1}$ . Taking $R = 0.0821 L atm mo l^{- 1} K^{- 1}$ , the temperature (in K) is approximately

Answer: B

Δ n = 4 - 2 = + 2

, so

K_{p} / K_{c} = (RT)^{2} = 3600

. Taking the square root,

RT = 60

and

T = 60/0.0821 = 731