Calculate the H°_rxn for the Decomposition of Calcium Carbonate

question 60

Multiple Choice

Calculate the H°_rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide. H°_f [CaCO₃(s) ] = -1206.9 kJ/mol; H°_f [CaO(s) ] = -635.1 kJ/mol; H°_f [CO₂(g) ] = -393.5 kJ/mol
CaCO₃(s)  CaO(s) + CO₂(g)

• A) -2235.5 kJ
• B) -1448.5 kJ
• C) -178.3 kJ
• D) 178.3 kJ
• E) 2235.5 kJ

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