1.

Consdier the following energy level diagram: The heat of formation of glucose is

Answer»

`-X`
`-y`
`x-y`
`-x + x`

Solution :From the data the GIVEN reactions are `6C + 6H_(2) + 9O_(2) rarr C_(6)H_(12)O_(6), Delta H= -x`
`6C + 6H_(2) + 9O_(2) rarr 6CO_(2) + 6H_(2)O, Delta H= -y`


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