Technical data

Freezing point depression (freezing mixture)

Article no: P1045300

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Principle

The ice is best crushed in a cloth so that individual pieces do not scatter.
In the first experiment the temperature of the ice water ϑ1 is generally between 2 and 3 °C. A temperature of 0 °C is achieved only after waiting a very long time. In the second experiment a temperature of under -10 °C is reached. Estimation of the temperature by extending the scale is sufficient for this qualitative experiment. If an exact temperature reading is desired, a thermometer with a scale which extends to at least -20 °C should be used.

Benefits

Own construction of a calorimeter deepens the understanding
Student-suitable experiment descriptions with reports available

Scope of delivery

Lid for student calorimeter	04404-01	1
Agitator rod	04404-10	1
Felt sheet, 100 x 100 mm	04404-20	2
Beaker, 100 ml, plastic (PP)	36011-01	1
Beakers, Boro, low form, various sizes	46054-00	1
Beakers, Boro, low form, various sizes	46055-00	1
Pipettes with rubber cap, various sizes	64701-00	1
Spoon, with spatula end, 180 mm, plastic	38833-00	1
Graduated cylinders, plastic, various sizes	36629-01	1
Students thermometer, -10...+110°C, l = 230 mm	38005-10	1
Sodium chloride, 500 g	30155-50	1