A) distillation
B) passing dry \[HCl\]
C) reacting it with \[Mg\]
D) heat with sodium metal
Correct Answer: C
Solution :
The most suitable method for-removing traces of water from alcohol is its reaction with Mg as Mg react only with \[{{H}_{2}}O\] to form insoluble \[Mg{{(OH)}_{2}}\] and not with alcohol. \[Mg+{{H}_{2}}O\to Mg{{(OH)}_{2}}\downarrow +{{H}_{2}}\uparrow \] Alcohol can also be purified by fractional distillation and not by simple distillation. Na, a highly reactive metal, reacts with both alcohol and \[{{H}_{2}}O\] therefore, cannot be used for this purpose. \[2Na+2{{C}_{2}}{{H}_{5}}OH\to {{C}_{2}}{{H}_{5}}ONa+{{H}_{2}}\uparrow \]
You need to login to perform this action.
You will be redirected in
3 sec
