Question Error Report

Question is incomplete/wrong

Question not belongs to this Chapter

Answer is wrong

Solution is wrong

Answer & Solution is not matching

Spelling mistake

Image missing

Website not working properly

Other (not listed above)

Error description

Q. Match the bond enthalpies given in column II with the molecules given in column I and mark the appropriate choice.

Column $I$ Colum $I I$

(A) Hydrogen $(H_2)$ (i) $498.0\, kJ\,mol^-1 $

(B) Oxygen $(0_2) $ (ii) $946.0 \,kJ \,mol^-1$

(C) Nitrogen $(N_2)$ (iii) $ 435.8\, kJ\, mol^-$

Chemical Bonding and Molecular Structure

A

$\left(A\right) \rightarrow \left(i\right), \left(B\right)\rightarrow \left(ii\right), \left(C\right)\rightarrow \left(iii\right) $

5%

B

$\left(A\right) \rightarrow \left(iii\right), \left(B\right)\rightarrow \left(ii\right), \left(C\right)\rightarrow \left(i\right) $

25%

C

$\left(A\right) \rightarrow \left(i\right), \left(B\right)\rightarrow \left(iii\right), \left(C\right)\rightarrow \left(ii\right) $

7%

D

$\left(A\right) \rightarrow \left(iii\right), \left(B\right)\rightarrow \left(i\right), \left(C\right)\rightarrow \left(ii\right) $

63%

Solution:

The order of bond enthalpies of the bonds is given as, Bond order$\propto$ Bond enthalpy
Hence, single bond enthalpy < double bond enthalpy < triple bond enthalpy
$H — H < O = O < N \equiv N$