The reaction CaCO3rarrCaO+CO2 is a...

The reaction `CaCO_3rarrCaO+CO_2` is a _______

displacement

decomposition

combination

double displacement

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If the standard molar enthalpy of formation of CaO_((s)), CO_(2(g)) "and" CaCO_(3(s)) is -635, -393 "and" -1207 kJ mol^-1 respectively, the Delta_r H^@ in kJ mol^-1 for the reaction CaCO_(3(s)) to CaO_((s)) + CO_(2(g)) is ________ .

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CHETANA PUBLICATION-Chemical Reactions and equations-EXAMPLE

The reaction CaCO3rarrCaO+CO2 is a
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