A steel rigid vessel of volume 1 l is filled with a mixture of methane and oxygen at a total pressur — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

combustion: ch4(g) + 2 o2(g) → co2(g) + 2 h2o(g). initially, p_dry = 1.0 - 0.04 = 0.96 atm. since react/product mole ratio is 1+2=3 to 1+2=3, the dry pressure does not change at constant v, t. thus, p_products at 27°c = 1.0 atm. heating to 127°c (400 k): p_final = 1.0 × (400/300) = 1.33 atm.