Apparatus Required Evaporating dish, balance, thermometer, beaker, metal ring, metal stand, wire gauze, Bunsen burner, glass rod, and crucible tongs.
Chemicals Required Saturated solution of sodium chloride Procedure Take a dry evaporating dish and weigh accurately.
Record the temperature of a saturated solution of sodium chloride provided. Add about 10 to 15 mL of the saturated sodium chloride solution into the evaporating dish and take the mass of the solution and the evaporating dish accurately.
Take a beaker nearly filled with water and boil water with a burner flame.
With a crucible, tongs carefully put the evaporating dish with solution on the beaker as shown in the diagram below.
Continuously stir the solution in the evaporating dish until a fine powder of sodium chloride salt remains.
Make sure that there is an opening between the amount of the beaker and the bottom of the evaporating dish. Never heat the beaker to dryness. If you have a small volume of water remaining in the beaker carefully add more water.
Cool the evaporating dish; dry the moisture on its outer bottom with a piece of paper.
Weigh the evaporating dish with the salt accurately and put the salt in a container prepared for this purpose.
Write report for this laboratory experiment?
This laboratory experiment was conducted to determine the mass of a saturated solution of sodium chloride. The apparatus used for this experiment included an evaporating dish, balance, thermometer, beaker, metal ring, metal stand, wire gauze, Bunsen burner, glass rod, and crucible tongs. The chemicals used were a saturated solution of sodium chloride.
The procedure began by taking a dry evaporating dish and weighing it accurately. The temperature of the saturated sodium chloride solution was then recorded. 10-15 mL of the saturated sodium chloride solution was added to the evaporating dish and the mass of the solution and the evaporating dish was taken accurately.
A beaker was filled with water and boiled with a burner flame. The evaporating dish with the solution was then carefully placed on the beaker with the help of a crucible and tongs. The solution was continuously stirred until a fine powder of sodium chloride salt remained. Care was taken to ensure that there was an opening between the amount of the beaker and the bottom of the evaporating dish. The evaporating dish was then cooled and the moisture on its outer bottom was dried with a piece of paper. The evaporating dish with the salt was weighed accurately and the salt was put in a container prepared for this purpose.
The results of this experiment showed that the mass of the saturated solution of sodium chloride was accurately determined. This experiment was successful in demonstrating the process of evaporating a saturated solution of sodium chloride.