Advertisements
Advertisements
प्रश्न
Which of the following observation is shown by 2-phenyl ethanol with Lucas Reagent?
विकल्प
Turbidity will be observed within five minutes.
No turbidity will be observed.
Turbidity will be observed immediately.
Turbidity will be observed at room temperature but will disappear after five minutes.
Advertisements
उत्तर
No turbidity will be observed.
Explanation:
Alcohols are soluble in Lucas reagent (conc. HCl and ZnCl2) while their halides are immiscible and produce turbidity in solution. In case of tertiary alcohols, turbidity is produced immediately as they form the halides easily. Primary alcohols do not produce turbidity at room temperature.
APPEARS IN
संबंधित प्रश्न
Write the mechanism of the following reaction :
Give the equation of the following reaction:
Oxidation of propan-1-ol with alkaline KMnO4 solution.
Give the equation of the following reaction:
Dilute HNO3 with phenol.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Lucas test is used for the detection of _____________.
During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is ____________.
Mark the correct increasing order of reactivity of the following compounds with HBr/HCl.
| (a) |  |
| (b) |  |
| (c) |  |
Name the factors responsible for the solubility of alcohols in water.
Alcohols react with active metals e.g. Na, K etc. to give corresponding alkoxides. Write down the decreasing order of reactivity of sodium metal towards primary, secondary and tertiary alcohols.
Write the mechanism of acid dehydration of ethanol to yield ethene.
