1.

Given enthalpy of formation of CO_2(g) and CaO(s) are -94.0 kJ and -152 kJ respectively and the enthalpy of the reaction,CaCO_3(s)rarrCaO(s) + CO_2(g) is 42 kJ. The enthalpy of formation of CaCO_3(s) is:

Answer»

`-42 KJ`
`-202 kJ`
`+202 kJ`
`-288 kJ`

ANSWER :D


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