Water Desalination Lab

Water Desalination Lab - condense for fifteen minutes 6....

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Andrew Golden Mr. Jenkins AP Environment 9/10/07 Water Desalination Lab Purpose : The purpose of this experiment is to use desalinated salt water to form purified, distilled water. Hypothesis : If the salt water is allowed to evaporate in the described apparatus, then the salinity of the condensed, distilled water in the beaker will be zero percent. Materials : 1 Erlenmeyer flask 1 hot plate 30 mL of salt water 1 400 mL beaker 1 Tupperware 1 rubber stopper 1 metal washer 1 ft. rubber tubing Ice 1 piece cardboard 2 pipettes Procedure : 1. Obtain the listed materials 2. Use pipette to place 1 drop of the salt water onto clean salinity tester 3. Read and record salinity 4. Assemble materials as in Figure 1 5. Turn hot plate on high power and allow the water to evaporate and
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Unformatted text preview: condense for fifteen minutes 6. Turn off hot plate Figure 1 7. Use a clean pipette to place 1 drop of the desalinated water onto clean salinity tester 8. Read and record the new salinity 9. Clean up station and await further instructions from teacher Data : Initial Salinity of Salt Water Final Salinity of Distilled Water 4.75% 0.00% Conclusion : The hypothesis was proven to be correct, the initial salinity of 4.75% was reduced to 0.00% after the distillation process. The salt in the original salt water was left behind in the Erlenmeyer flask during evaporation, so only pure water molecules traveled through the rubber tubing and into the beaker, resulting in purified, distilled water with a salinity of 0.00%....
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This note was uploaded on 06/26/2008 for the course ENV 1101 taught by Professor Don'tremember during the Spring '08 term at FSU.

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Water Desalination Lab - condense for fifteen minutes 6....

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