A) \[-93\,kJ\]
B) \[102\,kJ\]
C) \[90\,kJ\]
D) \[105\,kJ\]
Correct Answer: A
Solution :
\[\underset{\begin{matrix} {} \\ \text{Energy absorbed} \\ \end{matrix}}{\mathop{\underset{945\,\,\,\,\,\,\,\,\,\,\,\,\,+\,\,3\,\,\,\,\,\times \,\,\,436\,}{\mathop{N\equiv N+3H-H}}\,}}\,\,\,\xrightarrow{{}}\underset{\begin{matrix} {} \\ \text{Energy released} \\ \end{matrix}}{\mathop{\underset{2\times (3\times 391)=2346}{\mathop{\overset{H}{\mathop{\overset{|}{\mathop{\underset{H}{\mathop{\underset{\,|}{\mathop{2N}}\,}}\,-}}\,}}\,H}}\,}}\,\] Net. energy released = 2346 ? 2253 = 93 kJ i.e. ΔH = ? 93 kJ .You need to login to perform this action.
You will be redirected in
3 sec