COMEDK Exam 2014 Solved Paper

Question : 70 of 180

Marks: +1, -0

Standard molar enthalpies of formation of CaCO3(s),CaO(s) and CO2(g) are
−1206.92‌kJ‌mol−1,−635.09‌kJ‌mol−1 and
−393.51‌kJ‌mol−1 respectively. The ∆rH, for decomposition of CaCO3(s) is