1.

Heats of atmoisation of ozone and oxygen are 25 units and 30 units respectively. What is the heat of ozonisation of one mole of oxygen is the same units?

Answer»


Solution :`O_(3) rarr 30, Delta H_(1) = 25`
`O_(2) rarr 20, Delta H_(2) = 30`
`O_(2) rarr (2)/(3) O_(3), Delta H`
`Delta H = +30 - (2)/(3) xx 25 = (15)/(3) = 5`


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