y *"pa T.*AcA +'
t i J;
***
tr '
EXPERIMENT No.
Au1o test the presence
of a carbogyl group in the given
organic compou
EXPERIMENT OBSERVATION INFERENCE
Litmus test:
To about 1 mL of the
organic Blue litmus turns red.
Carboxyl or phcnolic
compound in a test tube add 2 3 group prcscu.
drops of blue litnus solution.
NaHCO Test:
Take about I mLof, the organic Brisk efervescenee due toCarboxyl
compound na test tube and àdd to itHberation of C0, gas group
a few drops of 5% aq. NaHCO, prèsents
occurs.
soution and observe carefily.
Ester fomation test
Take 1 mL of the orgaic
copound
ina clean and dry test tube and add-
to it 1 m. of ethanol and 2 drops of
conc. H,SO, . Wam.the mixture on a
water bath for-+0-15 minutes with A pkasant fruity smell is Carboxyl group
occasional sBaking. Cool and pour thedeiccled. present
cotents into 15-20 mL ofa 5%
aqueous solution of sodium carbonate
taken in a beaker and smell the
conte nts carefuly.
Reactions involved
Esterformation Test:
RCOOH + CH,CH,OH
Corboxylic acid Ethyl alcohol
Conc. H,SO,
RCOOCH.CH + H,0
Ethyl cster
NaHCO, test
RCOOH + NaHCO;
RCOONa + CO. + H,G
Result: The given organic compound contains -COOH (carboxyl) group as thc lunclional group.
6
t i J;
***
tr '
EXPERIMENT No.
Au1o test the presence
of a carbogyl group in the given
organic compou
EXPERIMENT OBSERVATION INFERENCE
Litmus test:
To about 1 mL of the
organic Blue litmus turns red.
Carboxyl or phcnolic
compound in a test tube add 2 3 group prcscu.
drops of blue litnus solution.
NaHCO Test:
Take about I mLof, the organic Brisk efervescenee due toCarboxyl
compound na test tube and àdd to itHberation of C0, gas group
a few drops of 5% aq. NaHCO, prèsents
occurs.
soution and observe carefily.
Ester fomation test
Take 1 mL of the orgaic
copound
ina clean and dry test tube and add-
to it 1 m. of ethanol and 2 drops of
conc. H,SO, . Wam.the mixture on a
water bath for-+0-15 minutes with A pkasant fruity smell is Carboxyl group
occasional sBaking. Cool and pour thedeiccled. present
cotents into 15-20 mL ofa 5%
aqueous solution of sodium carbonate
taken in a beaker and smell the
conte nts carefuly.
Reactions involved
Esterformation Test:
RCOOH + CH,CH,OH
Corboxylic acid Ethyl alcohol
Conc. H,SO,
RCOOCH.CH + H,0
Ethyl cster
NaHCO, test
RCOOH + NaHCO;
RCOONa + CO. + H,G
Result: The given organic compound contains -COOH (carboxyl) group as thc lunclional group.
6
