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OCR GCSE Chemistry 3 > Qualitative Tests > Flashcards

Qualitative Tests Flashcards

1
Q

How to test for the presence of Carbonates?

A

Add dilute acid

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2
Q

What is the positive observation for the presence of Carbonates?

A

Effervescence. The gas produced turn lime water cloudy.

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3
Q

How to test for the presence of Halides ?

A

Add dilute nitric acid, followed by silver nitrate solution.

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3
Q

What is the positive observation for the presence of Halides?

A
  • Chloride ions form a white precipitate of silver chloride.
  • Bromide ions form a cream precipitate of silver bromide.
  • Iodide ions form a yellow precipitate of silver iodide
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4
Q

How to test for the presence of Sulphates ?

A

Add dilute hydrochloric acid followed by barium chloride solution

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5
Q

What is the positive observation for the presence of Sulphates?

A

A white precipitate of barium sulphate is formed

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OCR GCSE Chemistry 3 (4 decks)

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