A) sodium
B) \[NaOH\text{/}{{I}_{2}}\]
C) neutral \[FeC{{l}_{3}}\]
D) \[B{{r}_{2}}\text{/}{{H}_{2}}O\]
E) phthalic anhydride/cone. \[{{H}_{2}}S{{O}_{4}}\] and \[NaOH\]
Correct Answer: A
Solution :
Phenol cannot be distinguished from ethanol by sodium because both evolve hydrogen with sodium. \[2{{C}_{6}}{{H}_{5}}OH+2Na\xrightarrow{{}}2{{C}_{6}}{{H}_{5}}ONa+{{H}_{2}}\uparrow \] \[2{{C}_{2}}{{H}_{5}}OH+2Na\xrightarrow{{}}2{{C}_{2}}{{H}_{5}}ONa+{{H}_{2}}\uparrow \]
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