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Card 16

Front

Concentration (g/dm^3) =

Back

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Card 17

Front

Which two cations does hard water contain?

Back

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Card 18

Front

What does hard water make when it reacts with soap?

Back

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Card 19

Front

What are the two kinds of hard water?

Back

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Card 20

Front

How can temporary hardness be removed?

Back

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Card 21

Front

What is limescale?

Back

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Card 22

Front

How can permanent hardness be removed?

Back

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Card 23

Front

What is a titration reaction?

Back

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Card 24

Front

What indicator should be used in a titration reaction?

Back

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Card 25

Front

In an acid, what colour is phenolphthalein?

Back

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