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chem > identification of anions > Flashcards

identification of anions Flashcards

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1
Q

carbonate test

A

add dilute acid and test the gas released

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2
Q

carbonate result

A

effervescence, gas produced is CO2 which turns limewater milky

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3
Q

chloride test

A

acidify with dilute nitric acid and add aqueous silver nitrate

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4
Q

chloride result

A

white percipitate

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5
Q

bromide test

A

acidify with dilute nitric acid and aqueous silver nitrate

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6
Q

bromide result

A

cream precipitate

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7
Q

iodide test

A

acidify with dilute nitric acid and aqueous silver nitrate

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8
Q

iodide result

A

yellow precipitate

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9
Q

nitrate test

A

add aqueous sodium hydroxide and aluminium foil, warm gently and test the gas released

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10
Q

nitrate result

A

gas given off is ammonia, has a pungent smell and turns moist res litmus paper blue

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11
Q

sulfate test

A

acidify with dilute notric acid and add aqueous barium nitrate

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12
Q

sulfate result

A

white precipitate

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13
Q

sulfite test

A

add dilute acid, warm gently and test the gas released

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14
Q

sulfite result

A

gas decolourises purple acidified aqueous potassium manganate (VII) solution

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15
Q
A
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chem (2 decks)

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