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GCSE Chemistry > Tests For Cations + Anions > Flashcards

Tests For Cations + Anions Flashcards

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1
Q

What is the test for li+?

A

Burns with a crimson red flame

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2
Q

What is the test for K+?

A

Burns with a lilac flame

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3
Q

What is the test for Na+?

A

Burns with a yellow flame

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4
Q

What is the test for Ca 2+?

A

Burns with a brick red flame

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5
Q

What is the test for ammonium ions?

A

Add Sodium Hydroxide and test the gas produced with damp red litmus paper. A positive result will be the litmus paper turns blue

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6
Q

What is the test for Cu 2+?

A

Add Sodium Hydroxide, a blue precipitate forms

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7
Q

What is the test for Fe 2+?

A

Add Sodium Hydroxide, a green precipitate forms

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8
Q

What is the test for Fe 3+?

A

Add Sodium Hydroxide, a orange/brown precipitate forms

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9
Q

How do you test for Halides? (Cl-, Br-, I-)

A

Nitric acid followed by silver nitrate solution. Followed by ammonia solution.

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10
Q

What is the positive result for chloride ions?

A

A white precipitate is formed. The precipitate is soluble in ammonia solution.

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11
Q

What is the positive result for Bromide ions?

A

A cream precipitate is formed. The precipitate is partially soluble in dilute ammonia solution.

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12
Q

What is the positive result for iodide ions?

A

A yellow precipitate is formed. The precipitate is not soluble in dilute ammonia solution

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13
Q

How do you test for sulfate ions?

A

Add dilute hydrochloric acid followed by barium chloride.

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14
Q

What is the positive result for sulphate ions?

A

A white precipitate is formed

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15
Q

How do you test for carbonate ions?

A

Add dilute hydrochloric acid

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16
Q

What is the positive result?

A

Bubbles of carbon dioxide are given off

GCSE Chemistry (13 decks)

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