1.

The standard molar heat of formation of ethane, CO_(2) and water (l) are respectively - 21.1, - 94.1 and - 68.3 kcal. The standard molar heat of combustion of ethane will be

Answer»

`- 372` kcal
162 kcal
`- 240` kcal
183.5 kcal

Solution :`C_(2)H_(6)+(7)/(2)O_(2)rarr2CO_(2)+3H_(2)O`substitute the values.


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