1.

When 3g of ethane gas is brunt at 25^(@)C, 156 kJ of heat is liberated. If the standard enthalpies of formation for CO_(2)(g) and H_(2)O(l) are -393.5 and -285.8 kJ*mol^(-1) respectively, then for ethane gas-

Answer»

STANDARD HEAT of combustion`=-1560kJ*MOL^(-1)`
standard heat of formation`=-67.9kJ*mol^(-1)`
standard heat of combustion=-832`kJ*mol^(-1)`
standard heat of formation =-84.4`kJ*mol^(-1)`.

ANSWER :A::D


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