Q.57 The thermodynamic data at 298 K for the decomposition reaction of imestone at equilibrium is given below CaCO3(s) CaO(s) COg) CaCOs() CaO(s) COg) Thermodynamic quantity -604.0 -394.4 -1128.8 (kJ mo -1206.9 -635.1 393.5 AH k mol) The partial pressure of CO:(g) in atm evolved on heating limestone (rounded off to two decimal places) at 1200 K is (Given: R= 8.314 J K' mol) A