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Application 2.docx
Application 2
Practical work
Aim: determines the relative humidity.
Equipment: laboratory thermometer, cuvette with water, a piece of bandage.
Procedure:
1. Measure the temperature of the air in the classroom using thermometer and write it down in a copybook.
2. Moisten a piece of dressing and wrap a thermometer in it. Watch the temperature drop. Once the temperature has settled, record the reading of the thermometer.
3. Find the temperature difference between dry and wet thermometer and, using psychrometric table, determine the relative humidity in the class.
Safety rules:
Remember that a glass thermometer must be handled carefully. After completing the task, do not forget to put the thermometer in the case.
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