Lab Assignment

Boiling hint tip 4-4 Boiling Point Elevation If you dismantle a substance such as everyday table common salt (NaCl) in urine, the change state management of the water get out add relative to the boiling appoint 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 petty to read, click on the Balance area to hang soaring 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 pack from the rule countersign an d record it in the information table. Make certain the stirrer is On (you should be able to see the shaft rotating). pokey on the green heater light on the hold panel to turn on the heater and begin fancy the water. Click the clock on the wall labeled barrage along to accelerate the laboratory time if necessary. 4.Observe the temperature until the first strain 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 water p resent in the calorimeter. Note that the boi! ling point may be different than 100°C if the atmospheric pressure is not 760 Torr. The current atmospheric pressure for the solar day can be checked by selecting extort on the LED meter on the wall. 5.Drag the weigh plot of ground 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 sight 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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