The ∆fH° for CO2(g) ; CO(g) and H2O (g) are -393.5, -110.5 and -241.8 KJmol-¹ respectively. The standard enthalpy change (in KJ) for the reaction: CO2(g) + H2(g) --> CO(g) + H2O(g) is

The ∆fH° for CO2(g) ; CO(g) and H2O (g) are -393.5, -110.5 and -241

1.	The ∆fH° for CO2(g) ; CO(g) and H2O (g) are -393.5, -110.5 and -241.8 KJmol-¹ respectively. The standard enthalpy change (in KJ) for the reaction: CO2(g) + H2(g) --> CO(g) + H2O(g) is
Answer» AnswerThe first reaction is exothermic and the second one is endothermic. If a mixture of STEAM and O 2 is PASSED over coke and temperature is kept constant, the CONVERSION of each to CO should not show any heat CHANGE, i.e.,totalheatevolvedinI=totalheatabsorbedinII. n 1 ×2×110=n 2 ×132∴ n 2 n 1 = 110×2132 = 10.6