Chemical Tests Flashcards

1
Q

Method for carrying out a Flame Test

A
  • clean platinum wire by dipping in hydrochloric acid
  • then put wire into metal salt
  • place in flame
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2
Q

Li+

A

Red

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3
Q

Na+

A

Orange

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4
Q

K+

A

Purple

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5
Q

Ca2+

A

Brick Red

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6
Q

Test for Ammonium ion , NH4+

A
  • add SODIUM HYDROXIDE
  • test gas produced, with DAMP RED litmus paper
  • Litmus paper will turn BLUE
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7
Q

Cu2+

A

Blue

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8
Q

Fe2+

A

Green

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9
Q

Fe3+

A

Rust Brown

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10
Q

Cl-

A

White

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11
Q

Br-

A

Cream

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12
Q

I-

A

Yellow

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13
Q

Ag+ (aq) + Cl- (aq) =

A

AgCl (s)

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14
Q

Ag+ (aq) + Br- (aq) =

A

AgBr (s)

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15
Q

Ag+ (aq) + I- (aq) =

A

Agl (s)

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16
Q

Test for Sulphate anion

A
  • Hydrochloric acid
  • add solution of Barium Chloride
  • WHITE precipitate produced = Barium Sulphate
17
Q

Test for Carbonate anion

A
  • Hydrochloric Acid
  • Bubble the gas (Co2) produced through Limewater
  • Turns CLOUDY
18
Q

Chemical test for water

A
  • Copper (II) Sulphate : White to Blue

- Colbalt (II) Chloride : Blue to Pink

19
Q

Hydrogen

A

Lighted Splint

Squeaky pop

20
Q

Oxygen

A

Glowing Splint

Relights

21
Q

Carbon Dioxide

A

Limewater

Cloudy / milky

22
Q

Ammonia

A

Damp Red Litmus Paper

Litmus paper turns blue

23
Q

Chlorine

A

Damp litmus paper

Bleaches / Turns white