To determine the boiling point of a liquid organic compound, the temperature at which the vapor pressure of a liquid becomes equal to the atmospheric pressure is called its boiling point. Mom, how can we determine the boiling point of a liquid organic compound? The boiling point of a liquid changes with pressure. For example, at 100 degrees Celsius the vapor pressure of water becomes equal to 1 at atmospheric pressure at sea level, hence its boiling point is 100 degrees Celsius. Let's do an experiment to determine the boiling point of a liquid organic compound. Our aim here is to determine the boiling point of a liquid organic compound. Materials required are thermometer, stand, wire cause, capillary tube, conical flask, iron stand with clamp distillation flask procedure. Arrange the apparatus as shown in figure. Pour the liquid in distillation flask, add few pumice stones to the flask, fix cock and thermometer. Make sure that the apparatus is airtight, heat the flask gently and note the temperature when bubbles start forming and temperature becomes constant. Observations The boiling point of liquid is X degrees Celsius. Result, the boiling point of given organic compound is X degrees Celsius. Precautions, the bulb of thermometer should be at the level of side tube of flask. Smooth heating of flask should be done. Pumise stones avoid bumping of liquid. Airtight setup of a apparatus is required. Thank you, Mom. We have understood the experiment very well.