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chemistry > test for anions, cations, gas, flame > Flashcards

test for anions, cations, gas, flame Flashcards

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1
Q

carbonate CO3

A

add diliute hcl

effervescene, co2 produced

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2
Q

chloride

A

acidify with nitric acid, add silver nitrate

white ppt

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3
Q

bromide Br-

A

acidify with nitric acid, add silver nitrate

cream ppt

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4
Q

iodide

A

acidify with nitric acid, add silver nitrate

yellow ppt

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5
Q

nitrate NO3-

A

add NaOH, cover with aluminium foil, heat gently

ammonia produced

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6
Q

sulpate SO4

A

acidify, add barium nitrate

white ppt

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7
Q

sulphite so3-

A

add dilute HCl
warm gently

test for presence for sulphur dioxide
turns acidify potassium manganate purple to colourless

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8
Q

aluminium

A

add NaOH

  • white ppt
  • soluble in excess

add NH3

  • white ppt
  • insoluble in excess
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9
Q

ammonium NH4

A

add NaOH

  • ammonia produced
  • turns red litmus blue
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10
Q

calcium

A

add NaOH

  • white ppt
  • insoluble in excess

add NH3

  • no ppt
  • soluble in excess
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11
Q

chronium Cr

A

NaOH

  • green ppt
  • soluble in excess

NH3

  • grey green ppt
  • insoluble in excess
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12
Q

copper Cu

A

add NaOH

  • light blue ppt
  • insoluble in excess

add NH3

  • light blue ppt
  • soluble in excess
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13
Q

iron 2

A

NaOH, NH3

  • green
  • insoluble in excess
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14
Q

iron 3

A

NaOH, NH3

  • red-brown
  • insoluble in excess
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15
Q

zinc

A

NaOH, NH3

  • white ppt
  • soluble in excess
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16
Q

NH3

A

turns red litmis blue

17
Q

carbon dioxide

A

turns limewater cloudy

18
Q

cl2

A

bleaches damp litmus paper

19
Q

sulfur dioxide

A

turns acidify potassium manganate purple to colourless

20
Q

hydrogen

A

makes a pop sound in lighted splint

21
Q

oxygen

A

relights a glowing splint

22
Q

Lithum ion

A

red flame

23
Q

sodium ion

A

yellow flame

24
Q

potassium ion

A

lilac flame

25
Q

copper ion

A

blue-green flame

chemistry (5 decks)

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