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The sublimation energy of I(2) (solid) i...

The sublimation energy of `I_(2)` (solid) is 57.3 KJ/mole and enthalpy of fusion is 15.5 KJ/mole. The enthalpy of vapourisation of `I_(2)` is

A

`41.8 kJ //mol`

B

`-41.8 kJ //mol`

C

`72.8 kJ //mol`

D

`-72.8 kJ //mol`

Text Solution

Verified by Experts

The correct Answer is:
A
`I_(2)(s)overset(Delta_("sub")H)(to)I_(2)(g)`
`:. Delta_("sub")H=Delta_(f)H+Delta_(vap)H`
`:. 57.3=15.5+Delta_(vap)H`
`Delta_(vap)H=41.8 kJ//mol`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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