Aim :- Determining the melting point of a given organic compound.

Apparatus required:-

Organic compound samples

* kzehldahl's apparatus

* Thermometer

bunsen burner

Stirring rod

Safety goggles and gloves

Procedure

Sample Preparation:

Weigh the Sample: Use a balance to weigh a small amount (a few milligrams) of the organic compound.

sealing of capillary : use bunsen burner to seal one end of capillary.

Capillary Tube Method: Pack the sample tightly into one end of a thin-walled capillary tube. Tap it gently to ensure it settles.

Set Up the Melting Point Apparatus:

we had taken thermometer,then i dipped it in sulpjuric acid of kjehldahl's apparatus.

then i had taken thermometer out and attached cappilary to thermometer.

then i put thermometer slowly into the conical flask so that it doesn,t touches suraface of conical flask.

Heating:

I Gradually heat the sample. i ensured even heating.

I  was Monitor the temperature closely using a thermometer.

Observe the Melting Process:

As the temperature rises, first signs of melting showed(the solid will start to change to liquid).

then I Record the temperature at which the sample first begins to melt (this is the melting point).

Continue to heat and record the temperature at which the entire sample has melted.

Repeat:

For accuracy, I  repeat the experiment 2-3 times with fresh samples to confirm the melting point.

Clean Up:

Dispose of the samples and clean your workspace according to safety guidelines.

observation:

sample1: 123c

sample 2: 124c

sample3: 127c

Observed melting point (first signs and complete melting): 124C

Average melting point : 124C

Result:

melting point of given organic compound is 124C.

Safety Precautions

Wear safety goggles and gloves throughout the experiment.

during heating sand bath must be present below bunsen burner as precaution.

capillary must be sealed completely for accurate melting point.