describe the method for the preparations of chloroform in laboratory?
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Pure chloroform is prepared by heating choral hydrate with a strong solution of caustic soda. Chloroform. is prepared in the laboratory by heating a mixture of Bleaching powder with ethanol or acetone. ... Chlorine gas evolved from bleaching powder paste oxides and chlorinates ethanol.
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Chloroform is a sweet smelling liquid having freezing point -630C. and has boiling point 610C. it is the colourless non-flammable liquid that is insoluble in water.
Preparation ofChloroform
It is prepared by following methods.
1. From methane.
On an industrial sacle,chloroform is prepared by chlorination of methane.
CH4−→−−−−−−hv/Cl2−HClCH3Cl−→−−−−−Cl2/−HClCH2Cl2−→−−−−−Cl2/−HClCHCl3=(Chloroform)CH4→hv/Cl2−HClCH3Cl→Cl2/−HClCH2Cl2→Cl2/−HClCHCl3=(Chloroform)
2. From carbon tetrachloride.
Chloroform can also be prepared on the industrial scale by partial reduction of carbon tetrachloride with iron filings and stream.
CCl4+2[H]−→−−−−−−−Fe/H20/HeatCHCl3+HClCCl4+2[H]→Fe/H20/HeatCHCl3+HCl
CHCl3=(Chloroform)CHCl3=(Chloroform)
3. From choral hydrate.
Pure chloroform is prepared by heating choral hydrate with a strong solution of caustic soda.
CCl3CH(OH)2+NaOH−→−heatCHCl3+HCOONa+H20CCl3CH(OH)2+NaOH→heatCHCl3+HCOONa+H20
CCl3CH(OH)2=ChoralhydrateCCl3CH(OH)2=Choralhydrate
CHCl3=(Chloroform)CHCl3=(Chloroform)
Laboratory preperation of Chloroform.
Principle
Chloroform. is prepared in the laboratory by heating a mixture of Bleaching powder with ethanol or acetone. In this reaction, bleaching powder acts as oxidising chlorinating and hydrolyzing agent.
CaOCl2+H20→Ca(OH)2+Cl2CaOCl2+H20→Ca(OH)2+Cl2
CaOCl2CaOCl2
Chlorine gas evolved from bleaching powder paste oxides and chlorinates ethanol. Moreover, it chlorinates acetone as well.
PLEASE MARK MY ANSWER AS A BRAINLIEST.
Preparation ofChloroform
It is prepared by following methods.
1. From methane.
On an industrial sacle,chloroform is prepared by chlorination of methane.
CH4−→−−−−−−hv/Cl2−HClCH3Cl−→−−−−−Cl2/−HClCH2Cl2−→−−−−−Cl2/−HClCHCl3=(Chloroform)CH4→hv/Cl2−HClCH3Cl→Cl2/−HClCH2Cl2→Cl2/−HClCHCl3=(Chloroform)
2. From carbon tetrachloride.
Chloroform can also be prepared on the industrial scale by partial reduction of carbon tetrachloride with iron filings and stream.
CCl4+2[H]−→−−−−−−−Fe/H20/HeatCHCl3+HClCCl4+2[H]→Fe/H20/HeatCHCl3+HCl
CHCl3=(Chloroform)CHCl3=(Chloroform)
3. From choral hydrate.
Pure chloroform is prepared by heating choral hydrate with a strong solution of caustic soda.
CCl3CH(OH)2+NaOH−→−heatCHCl3+HCOONa+H20CCl3CH(OH)2+NaOH→heatCHCl3+HCOONa+H20
CCl3CH(OH)2=ChoralhydrateCCl3CH(OH)2=Choralhydrate
CHCl3=(Chloroform)CHCl3=(Chloroform)
Laboratory preperation of Chloroform.
Principle
Chloroform. is prepared in the laboratory by heating a mixture of Bleaching powder with ethanol or acetone. In this reaction, bleaching powder acts as oxidising chlorinating and hydrolyzing agent.
CaOCl2+H20→Ca(OH)2+Cl2CaOCl2+H20→Ca(OH)2+Cl2
CaOCl2CaOCl2
Chlorine gas evolved from bleaching powder paste oxides and chlorinates ethanol. Moreover, it chlorinates acetone as well.
PLEASE MARK MY ANSWER AS A BRAINLIEST.
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