Water purification RP

Question 1

Collecting a sample of pure water method

Answer 1

1. pour sample of salt water into a conical flask with a condenser attached to it
2. heat the salt water with a bunsen burner
3. Water has a boiling point of 100 degrees, which is lower than the boiling point of the salt
4. The water will boil and evaporate before the salt does, into steam
5. The steam then goes through the condenser where it cools and condenses into a liquid which is the pure water
6. the salt remains in the conical flask
7. to check if water is pure, heat it again and see if it boils at 100 degrees, as it is the boiling point of water

Question 2

difference between pure water and potable water

Answer 2

Potable water is water that is safe to drink for humans and contains minerals
Pure water has no mineral salts in it and is purely just H2O

Question 3

Why does water obtained by distillation not need to be sterilised and is safe to drink

Answer 3

Because it is pure and only contains H2O molecules

Question 4

How is fresh water sterilised

Answer 4

Using chlorine
Using ozone
Using UV light

Question 5

pH of fresh water

Answer 5

7