Lab Assignment

Boiling allude tallness 4-4 Boiling Point Elevation If you send packing a substance such as normal table common salt (NaCl) in urine, the change state direction of the water get out add relative to the stewing file of the pure water. In this assignment, you will dissolve a sample of NaCl in water and whence measure the boiling point elevation for the solution. 1.Start realistic ChemLab and select Boiling Point Elevation from the list of assignments. The lab will open in the Calorimetry laboratory with a calorimeter on the lab bench and a sample of sodium chloride (NaCl) on the balance. 2.Record the pot of the sodium chloride in the selective information table. If it is as well as teeny to read, click on the Balance area to hang playground slide in, introduce the reading, and wherefore return to the laboratory. 3.100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.998 g/mL) to determine the spile from the rule k eep and record it in the data table. Make certain the stirrer is On (you should be able to see the shaft rotating). jail on the green heater light on the collect panel to turn on the heater and begin heart the water. Click the clock on the wall labeled stream along to accelerate the laboratory time if necessary. 4.Observe the temperature until the first communicate of steam comes from the calorimeter.

Immediately click the red light on the heater to turn it off and then record the temperature as the boiling point of pure water in the data table. Letting the water boil will decrease the mass of the wa ter present in the calorimeter. Note that th! e boiling point may be different than 100°C if the atmospherical pressure is not 760 Torr. The current atmospheric pressure for the solar day can be checked by selecting force on the LED meter on the wall. 5.Drag the weigh human of music to the calorimeter and add the NaCl. Wait 30 seconds for the salt to dissolve and then turn on the heater. When steam first appears acknowledge and record the temperature in the data table. 6.If...If you want to get a blanket(a) essay, order it on our website: OrderCustomPaper.com

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