deionised VS distilled water - IOE Notes

Question 1

What are the 3 advantages of hardwater?

Answer 1

1. Tastes better
2. Contains calcium, which is good for bones and teeth
3. Good for the brewing industry (better beer!) and tanning leather

Question 2

What are the 3 disadvantages of hardwater?

Answer 2

1. ‘dirty’ looking scum produced with soap
2. wastes soap
3. produces ‘scale’ that can block pipes and make the heating elements useless (blocks pipes, leaves scale on kettles and boilers)

Question 3

What is the purest form of water and why?

Answer 3

distilled water is the purest form of water as all dissolved and suspended solids as well as dissolved gases have been removed from the water

Question 4

Which is purer, distilled or deionised water?

Answer 4

distilled water.

Question 5

What does deionised water contain that distilled water does not?

Answer 5

Deionised water contains dissolved gases as well as any non-ionic material (organic material) that may be dissolved in the water

Question 6

What do deionised water and distilled water have in common?

Answer 6

they both contain no ions

Question 7

How does deionised water differ from distilled water?

Answer 7

deionised:
has dissolved gases and organic material

distilled:
no dissolved gases and organic material