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Experiment No.15 Aim:To Identify The Functional Group Present in The Given Organic Compound

The experiment aimed to identify the functional group in an unknown organic compound. The compound was colorless, liquid with a vinegar-like odor and soluble in water. Tests showed it turned blue litmus red, evolved a colorless gas when shaken with sodium bicarbonate, and produced a fruity smell when mixed with acetic acid and sulfuric acid, indicating the presence of a carboxylic acid functional group. Sodium hydroxide also caused the compound to dissolve, further confirming the presence of the carboxylic acid group.

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mohnish
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100K views

Experiment No.15 Aim:To Identify The Functional Group Present in The Given Organic Compound

The experiment aimed to identify the functional group in an unknown organic compound. The compound was colorless, liquid with a vinegar-like odor and soluble in water. Tests showed it turned blue litmus red, evolved a colorless gas when shaken with sodium bicarbonate, and produced a fruity smell when mixed with acetic acid and sulfuric acid, indicating the presence of a carboxylic acid functional group. Sodium hydroxide also caused the compound to dissolve, further confirming the presence of the carboxylic acid group.

Uploaded by

mohnish
Copyright
© © All Rights Reserved
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Experiment No.

15
Aim:To identify the functional group present in the given organic compound.
Physical properties
Colour : Colourless
State : Liquid
Odour : Vinegar like
Solubility: Soluble
Action on litmus solution: Blue litmus to red.
S.No.
1.

Experiment
Test for unsaturation
To the organic compound add
alkaline potassium
permanganate solution.

Observation
Inference
Colour of potassium No unsaturation
permanganate is not
discharged

2.

Sodium bicarbonate test


Shake the compound with 5%
solution of Sodium
bicarbonate
Ester Formation Test:
To 1ml of organic compound
add 1ml of acetic acid
followed by 1 or 2 drops of
conc. sulphuric acid.
NaOH solution Test:
Add 1ml of organic
compound to 1ml sodium
hydroxide solution.

A colourless gas
with brisk
effervescence is
evolved.
Fruity smell comes
out.

Carboxylic -COOH
group may be
present.

The compound
dissolves.

Carboxylic -COOH
is present.

3.

4.

Carboxylic -COOH
is present.

Result :The given organic compound contains Carboxylic -COOH group.

Chemical Equations (To be written on the blank page with pencil)


1.RCOOH + NaHCO3

RCOONa + H2O + CO2


c o c n c H 2S O

2.RCOOH + C2H5OH
3.RCOOH + NaOH

RCOOC2H5 + H2O
RCOONa + H2O

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