If the enthalpy of atomization for Br2(l) is x kJ/mol and the bond enthalpy for Br2 is y kJ/mol, the relation between them:
is x > y
is x < y
is x = y
does not exist
is x > y
Enthalpy of atomization, , is the change in enthalpy when one mole of bonds is completely broken to obtain atoms in the gas phase.
The explanation for the correct option:
Hence, [vap= vapourisation, BE= Bond enthalpy]
A. x > y
Now,According to question
So by Hess law
So,
The explanation for the incorrect option:
Hence, A is the correct option.