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purify a water sample by distillation - Coggle Diagram
purify a water sample by distillation
Hypothesis
A simple distillation apparatus can be set up separate pure water from a mixture of water and unwanted substances
Materials
10 cm3 of water sample A
Bunsen burner
Tripod
Gauze
Heatproof mat
Clamp and clamp stand
Conical flask with delivery tube and bung
Boiling tube
Ice bath
Practical Tip
The delivery tube must sit above the filtrate level to prevent cold water being sucked back up the delivery tube after separation, which would break the hot glass
Method
Add the water sample to the conical flask and set up the apparatus for distillation as shown in the diagram
Heat the water using the Bunsen burner until boiling occurs
Reduce the heat so that the water boils gently for some time
The distilled water will collect in the cooled test tube
Collect about 2 cm depth of water in this way, then stop heating
Analyse the water you have distilled by determining its boiling point
Results
Distillate of pure clean water
Evaluation
The pH of the water can be tested as well as its boiling point
Conclusion
Simple distillation can be used to produce pure water from a sample of impure or contaminated water
Objective
To separate pure clean water from a sample containing water and other substances