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Chemistry
Chemistry
Problem
The enthalpy of formation of XY is
−
100
-100
−
100
kJ mol
−
1
^{-1}
−
1
. If the bond dissociation enthalpy of X
2
_2
2
and Y
2
_2
2
are 20 and 40 kJ mol
−
1
^{-1}
−
1
respectively then bond dissociation enthalpy of XY (in kJ mol
−
1
^{-1}
−
1
) is
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