Chemistry, 08.08.2019 00:20, aroland1990x
Calculate the δ h°rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide. δ h°f [caco3(s)] = –1206.9 kj/mol; δ h°f [cao(s)] = –635.1 kj/mol; δ h°f [co2(g)] = –393.5 kj/mol
Answers: 1
![\begin{array}{rcl}\Delta_{\text{r}}H^{\circ}& = & [(-635.1 + (-393.5)] - (-1206.9)\\& = & -1028.6 +1206.9\\& = & \mathbf{178.3}\\\end{array}\\\text{The enthalpy of decomposition is } \boxed{\textbf{178.3 kJ/mol}}](/tpl/images/0172/9753/c40b5.png)
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