1.

How much heat will be required at constant pressurent to form 1.28 kg of CaC_(2) from CaO(s) & C(s)? {:("Given :",Delta_(f)H^(@) (CaO","s),=,-152 kcal//mol),(,Delta_(f)H^(@) (CaC_(2)","s),=,-14 kcal//mol),(,Delta_(f)H^(@) (CO","g),=,-26 kcal//mol):}

Answer»

`+112` KCAL
`224` kcal
`3840` kcal
`2240` kcal

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