RPA08: Water Purification

Question 1

Aim

Answer 1

Analysis and purification of water samples from different sources

Question 2

Step one of analysing a sample of water

Answer 2

Use universal indicator to test pH of water

Question 3

Step two of analysing a sample of water 

Answer 3

Measure and record mass of an empty evaporating basin

Question 4

Step three of analysing a sample of water

Answer 4

Pour 10 cm³ of water into evaporating basin and evaporate water using a Bunsen burner

Question 5

Step four of analysing a sample of water 

Answer 5

Reweigh facing after it is cool and record it’s change in mass

Question 6

Step five of analysing a sample of water 

Answer 6

Calculate the mass of dissolved solids in the water

Question 7

Step one of purifying a sample of water by distillation 

Answer 7

Place water into conical flask

Question 8

Step two of purifying a sample of water by distillation 

Answer 8

Heat water gently using a Bunsen burner until it boils then reduce heat so the water boils gently

Question 9

Step three of purifying a sample of water by distillation 

Answer 9

Collect 1 cm depth of water in cold test tube then turn Bunsen burner off

Question 10

Step four of purifying a sample of water by distillation 

Answer 10

Analyse water you have distilled with cobalt chloride paper