Fusion tube, capillary tube, tripod, kerosene burner, thermometer, aluminium block, Pasteur pipette and stand with clamp
1. In a fusion tube, transfer 4-5 drops of water with the help of Pasteur pipette and place it in one of the holes of the aluminium block (B.P. and M.P. apparatus).Care should be taken such that water level in the fusion tube is visible after placing it in the hole. Seal one end of a capillary tube in the flame of the kerosene burner. Dip the open end of the capillary tube into water in the fusion tube. 2. Insert the thermometer in the second hole of the aluminium block. 3. Put the aluminium block on the tripod stand and heat the apparatus with the help of kerosene burner slowly. 4. Observe what happens to water. Do you see any bubbles arising slowly in the fusion tube? 5. Record the temperature when you observe a steady stream of bubbles. This temperature is the boiling point of water. Do you observe any further rise in temperature after the steady stream of bubbles started coming out?
1. Boiling point of water is remains constant during the boiling of water.