Making Salts Flashcards

1
Q

Why is sulfuric acid heated in stage 1?

A

To increase speed of reaction

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2
Q

How would you know when copper oxide is in excess in stage 2.

A

It stops disappearing

Or there is black suspension

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3
Q

Why is the mixture filtered in stage 3?

A

To remove excess copper oxide

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4
Q

Why do crystals form when the hot saturated solution is cooled in stage 5?

A

Copper sulfate are less soluble in cold water

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5
Q

State the colour of the crystals formed in stage 5

A

Blue

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6
Q

Suggest a suitable method of drying crystals

A

On filter paper or tissue paper

Or leave in warm place

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