C3, Water

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  • Created by: emmajane_
  • Created on: 14-05-14 12:50
What makes water hard?
The precence of calcium and magnesium ions
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What forms scum?
When calcium and magnesium ions react with soap
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How can you measure the hardness of water?
By titrations
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When is temporary hard water softened?
When heated to boiling point
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How can you soften hard water?
Remove calcium and magnesium ions
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How can you remove calcium and magnesium ions from water? Name 2 ways
1. Add sodium carbonate 2. Use ion exchange columns
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What happens when you react sodium carbonate with calcium and magnesium ions?
An insoluble precipitate is formed
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Other cards in this set

Card 2

Front

What forms scum?

Back

When calcium and magnesium ions react with soap

Card 3

Front

How can you measure the hardness of water?

Back

Preview of the front of card 3

Card 4

Front

When is temporary hard water softened?

Back

Preview of the front of card 4

Card 5

Front

How can you soften hard water?

Back

Preview of the front of card 5
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