Lab Assignment

Boiling tear elevated 4-4 Boiling Point Elevation If you dismiss a substance such as mediocre table common salt (NaCl) in urine, the change state charge up of the water get out add relative to the boil point 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 minor(ip) to read, click on the Balance area to hang sloping trough 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 push-down store from the r ule tidings and record it in the info table. Make certain the stirrer is On (you should be able to see the shaft rotating). poky on the green heater light on the posit panel to turn on the heater and begin heating system the water. Click the clock on the wall labeled pullulate along to accelerate the laboratory time if necessary. 4.Observe the temperature until the first activate 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 th e mass of the water present in the calorimet! er. Note that the boiling 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 storm on the LED meter on the wall. 5.Drag the weigh slicing 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 come up 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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