CBSE Class 12-science Answered
give a chemical test to distinguish butan2ol and 2methylpropane 2 ol.
Asked by vasturushi | 18 Jun, 2017, 09:07: PM
Expert Answer
Butan-2-ol is secondary alcohol and 2-methylpropan-2-ol is tertiary alcohol.
Lucas test to distinguish between secondary and tertiary alcohols:
Both the alcohols are treated with Lucas reagent (HCl + ZnCl2)
Turbidity appears immediately for tertiary alcohols such as 2-methylpropan-2-ol.
In case of secondary alcohols such as Butan-2-ol, turbidity appears after 5 minutes.
Answered by Prachi Sawant | 19 Jun, 2017, 10:47: AM
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