3B Scientific Advanced Thermodynamics Kit User Manual

SEK Heat U8502000
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments
© Copyright 2010 3B Scientific GmbH
Contents
20 1 Bimetal strip 21 1 Aluminium tube 22 1 Steel tube 23 1 Brass tube 24 Stand rod with internal and external threads 25 4 Wooden rods 26 1 Spirit burner 27 1 Pointer/hook 28 10 Sheets of thermal paper 29 1 Test tube holder 30 1 Stirrer 31 10 Round filters 32 3 Flow spirals 33 2 Round gaskets 34 1 Steel body and 1 lead body 35 1 10 g weight 36 1 Angle scale 37 10 Sheets of paper 38 5 Sheets of aluminium foil
SEK Thermodynamics/Heat
Work sheet
1
K303 Specific heat capacity of a calorimeter
Exercise
x Determine by experiment the specific heat capacity C
Kal
of a calorimeter.
Equipment
From SEK Thermodynamics (U8502000)
1 Stand rod with internal and external threads 1 Double clamp 1 Spirit burner 1 Test tube holder 1 Conical flask 2 Thermometers 1 Calorimeter
Additionally required
1 SEK base plate (U8408035) Water
Set-up and procedure
1) Fill the metal beaker of the calorimeter with 50 ml of water and put the lid on it.
2) Push a thermometer through the rubber stopper in the lid of the calorimeter so that the tip of the thermometer is in the water but does not touch the bottom of the vessel.
3) Measure the temperature of the water in the calorimeter -
1
and enter the value into the
column Measurement 1 of the table.
4) Screw the stand rod with external and inter­nal threads into the base plate (see Fig. 1).
5) Attach a double clamp to the rod at a height of about 20 cm and clamp a test tube holder into it.
6) Fill a conical flask with 50 ml of water, clamp it into the test-tube holder and put a second thermometer into it.
7) Put the spirit burner on the base plate and move the double clamp holding the flask till the flask is about 3 cm above the burner (see Fig. 1).
8) Light the spirit burner and heat the water in the flask till it reaches a temperature of about 70°C.
9) Put out the flame once the experiment is over by lowering the wick and putting the cap over it.
10) Take the test tube holder out of the clamp
11) After about a minute, read off the tempera­ture of the hot water -
2
and enter that value
into the table
12) Empty the water out of the conical flask into the metal beaker of the calorimeter and close the lid (see Fig. 2).
13) Stir the water well, measure the temperature
-
m
of the mixed water and enter the reading
into the table.
14) Now empty the water out of the metal beaker back into the conical flask and briefly rinse out the beaker with cold water.
15) Fill the beaker with a fresh 50 ml of water, repeat the experiment and enter the results in column Measurement 2 of the table.
Fig. 1
Fig. 2
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