1.

What will be the heat of formation of ethane, in the heat of combustion of carbon is -x kJ ,heat of formation of water is -ykJ , and heat liberated during complete combustion of ethane is zkJ

Answer»

`(-2x-2y+z)KJ`
`(-2x-3y+z)kJ`
`(-2x+3y+z)kJ`
`(-2x-3y-z)kJ`

ANSWER :B


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