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A LEVEL CHEM > Chemical Analysis > Flashcards

Chemical Analysis Flashcards

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1
Q

Flame test Ca2+

A

Orange/red

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2
Q

Flame test Li+

A

Crimson

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3
Q

Flame test Cu2+

A

Green

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4
Q

Flame test Na+

A

Yellow

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5
Q

FLAME TEST K+

A

Lilac

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6
Q

white precipitate that is insoluble in sodium hydroxide

A

Al3+ , Mg 2+, Ca2+

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7
Q

White precipitate that is soluble in excess sodium hydroxide

A

Al 3+

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8
Q

Red precipitate when sodium hydroxide is added

A

Fe3+

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9
Q

Light blue precipitate when sodium hydroxide is added

A

Cu2+

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10
Q

Light green/brown precipitate when sodium hydroxide is added

A

Fe2+

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11
Q

Test for carbonates

A

Add Hcl , if fizzing happens– shows co2 is present therefore it is a carbonate-

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12
Q

How to test for halides

A

Add dilute nitric acid and then silver nitrate
If a precipitate forms halide ions are present

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13
Q

Colour of precipitate when iodine ions are present

A

Yellow precipitate

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14
Q

Colour of precipitate when Br ions are present

A

Cream precipitate

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15
Q

Precipitate colour when chloride ions are formed

A

White precipitate

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16
Q

How can you identify sulfates

A

Add HCl then barium chloride solution this produces a white precipitate of barium sulfate

A LEVEL CHEM (10 decks)

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