Q. 184.0( 7 Votes )

Give chemical tests to detect the presence of a. ethanol and b. ethanoic acid.

Answer :

(a) Reaction with Na metal:


Ethanol reacts with sodium metal to liberate hydrogen gas.


2R-OH + 2Na 2R-O-Na+ + H2


Iodoform Test:


Ethanol when treated with iodine solution and sodium hydroxide produces a yellow precipitate of iodoform (CHI3).


CH3CH2OH + 4I2 + 6NaOH CHI3 + HCOONa + 5NaI + 5H2O


Esterification reaction:


Ethanol reacts with a carboxylic acid in the presence of an acid to produce sweet smelling compounds called esters. The reaction is called esterification reaction.



(b) Reaction with bases:


Ethanoic acid react with bases like NaOH to give salt and water. This is called neutralisation reaction.


Reaction with carbonates and bicarbonates:


Ethanoic acid reacts with metal carbonates and bicarbonates to produce brisk effervescence due to the evolution of carbon dioxide.


2CH3COOH + Na2CO3 2CH3COONa + CO2 + H2O


CH3COOH + NaHCO3 CH3COONa + CO2 + H2O


Esterification reaction:


Ethanoic acid reacts with an alcohol in the presence of an acid to produce sweet smelling compounds called esters. The reaction is called esterification reaction.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Carbon And its UniquenessCarbon And its UniquenessCarbon And its Uniqueness26 mins
Quiz | Solve Imp. Qs. of CarbonQuiz | Solve Imp. Qs. of CarbonQuiz | Solve Imp. Qs. of Carbon27 mins
Know About Carbon & Its Amazing PropertiesKnow About Carbon & Its Amazing PropertiesKnow About Carbon & Its Amazing Properties33 mins
Agriculture and its ImportanceAgriculture and its ImportanceAgriculture and its Importance35 mins
Relative Motion and its studyRelative Motion and its studyRelative Motion and its study59 mins
Globalisation and its ImpactGlobalisation and its ImpactGlobalisation and its Impact29 mins
Industries and its ImportanceIndustries and its ImportanceIndustries and its Importance37 mins
Indicators and its TypesIndicators and its TypesIndicators and its Types44 mins
Champ Quiz | Ecosystem and its componentsChamp Quiz | Ecosystem and its componentsChamp Quiz | Ecosystem and its components42 mins
Equilibrium and its typesEquilibrium and its typesEquilibrium and its types39 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses