MCQ
Among the given compounds, the correct dehydration order is :
- ✓$I < II < III < IV$
- B$II < III < IV < I$
- C$I < III < IV < II$
- D$I < II < III = IV$
Phenyl carbocations are least stable, so the order is $I\, <\, II\, < \,III \,<\, IV$.
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${C_6}{H_5} - COO - C{H_3}\mathop {\xrightarrow{{1.\,LiAl{H_4}}}}\limits_{2.\,{H_2}O} $
($en=$ ethylenediamine)
| Process | $\Delta H / kJ\,mol ^{-1}$ | $\Delta S / J K^{-1}$ |
| $A$ | $-25$ | $-80$ |
| $B$ | $-22$ | $40$ |
| $C$ | $25$ | $-50$ |
| $D$ | $22$ | $20$ |
The number of non-spontaneous process from the following is $.....$
Assertion $A:$ Butan$-1-$ol has higher boiling point than ethoxyethane.
Reason $R:$ Extensive hydrogen bonding leads to stronger association of molecules.
In the light of the above statements, choose the correct answer from the options given below: