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UACE Chemistry > Chemistry Practicals > Flashcards

Chemistry Practicals Flashcards

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1
Q

Sweet fruity smell

A
  • Ester
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2
Q

Yellow or blue non-sooty flame

A
  • Aliphatic compound with low carbon content
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3
Q

Yellow sooty flame

A
  • Aromatic compound of high carbon content
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4
Q

Organic compound miscible in water

A
  • Polar aliphatic compound of low molecular mass
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5
Q

Organic compound partially/ sparingly miscible in water

A
  • Polar aliphatic compound of high molecular mass
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6
Q

Organic compound immiscible in water

A
  • Non-Polar organic compound of low molecular mass
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7
Q

Organic compound turned damp blue litmus paper red

A
  • Acidic organic compound
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8
Q

Organic compound turned damp red litmus paper blue

A
  • Basic organic compound
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9
Q

Organic compound had no effect on red or blue litmus paper

A
  • Neutral organic compound
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10
Q

Organic compound dissolved in dilute sodium hydroxide without effervescence

A
  • Carboxylic acid
  • Phenol
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11
Q

Organic compound formed bubbles of a gas with sodium carbonate or sodium hydrogen carbonate solution

A

Carboxylic acid

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12
Q

Organic compound formed a yellow precipitate with 2,4-dinitrophenylhydrazine

A
  • Carbonyl compound
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13
Q

Organic compound formed a sweet fruity smell when added to ethanoic acid in presence of concentrated sulphuric acid

A

Ester formed; alcohol present

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14
Q

Organic compound formed a sweet fruity smell when added to ethanol in presence of concentrated sulphuric acid

A

Ester formed; carboxylic acid present

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15
Q

Organic compound formed a purple solution with neutral iron(iii) chloride solution

A

Phenol

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16
Q

Organic compound formed a brown precipitate with neutral iron(iii) chloride solution

A
  • Benzoic acid
  • carboxylic acid
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17
Q

Organic compound formed a white precipitate with sodium hydroxide solution and silver nitrate solution

A

Chloroalkane

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18
Q

Organic compound formed a cream precipitate with sodium hydroxide solution and silver nitrate solution

A

Bromoalkane

19
Q

Organic compound formed a yellow precipitate with sodium hydroxide solution and silver nitrate solution

A

Iodoalkane

20
Q

Organic compound turned a brown solution of bromine water colourless

A

Unsaturated compound eg
alkyne, alkene

21
Q
  • Organic compound turned a brown solution of bromine water to a white precipitate
A

Unsaturated compound
eg Aromatic amine, phenol

22
Q

Organic compound turned a purple solution of potassium permanganate to a colourless solution

A

(Reducing agent)
- Primary alcohol
- Secondary Alcohol
- Aldehyde
- Methanoic acid

23
Q

Organic compound turned an orange solution of potassium dichromate solution to a green solution

A
  • Primary alcohol
  • Secondary Alcohol
  • Aldehyde
  • Methanoic acid
24
Q

Organic compound formed a silver mirror with ammoniacal silver nitrate solution

A
  • Aldehyde
  • Methanoic acid
    (It is a mild oxidizing agent)
25
Q

Organic compound formed a reddish brown precipitate with Fehling’s solution/ ammoniacal copper(I) chloride

A
  • Aldehyde (except benzaldehyde)
  • Methanoic acid
    (It is a mild oxidizing agent)
26
Q
  • Organic compound formed a white precipitate/ colourless crystals with sodium hydrogen sulphite
A
  • Methyl ketone
  • Aldehyde (other than methanal and ethanal)
27
Q

Organic compound formed a cloudy solution immediately with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)

A

Tertiary alcohol

28
Q

Organic compound formed a cloudy solution in 7 minutes with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)

A

Secondary alcohol

29
Q

Organic compound; no cloudy solution with anhydrous zinc chloride and concentrated hydrochloric acid solution (Lucas’ reagent)

A

Primary alcohol

30
Q

Organic compound formed yellow precipitate with iodine and sodium hydroxide solution

A
  • Secondary alcohol with the structure
  • Ethanol (only primary alcohol with the structure)
  • Ketone with the structure
  • Ethanal (only aldehyde with the structure)
31
Q

Crystalline compound

A
  • Sulphates
  • Nitrates
  • Chlorides
  • Oxalates
  • Sulphite
  • Ethanoate
32
Q

Powdery compound

A
  • Carbonates
  • Oxides
33
Q

White solid, colourless solution

A

Non-transition element ions
- Zinc
- Aluminum
- Lead
- Tin
- Ammonium
- Calcium
- Barium
- Magnesium

34
Q

Black solid

A
  • Oxide
  • Sulphide
    Of a transition metal
35
Q

Green solid, green solution

A
  • Chromium ions
  • Iron(ii) ions
  • Copper(ii) ions
  • Nickel(ii) ions
36
Q

Blue solid, blue solution

A
  • Copper(ii) ions
37
Q

Yellow solid, yellow solution

A
  • Chromium(vi) ions from chromate ions
  • Iron(iii) ions
38
Q

Orange solid, orange solution

A
  • Chromium(vi) ions from dichromate ions
39
Q

Pale pink, not visible in solution

A

Manganese(ii) ions

40
Q

Brown solid, brown solution

A

Iron(iii) ions

41
Q

Pale violet solid, pale violet solution

A

Chromium(iii) ions

42
Q

Red or pink solid, solution

A
  • Cobalt(ii) ions
  • Manganese(ii) ions
43
Q

White to reddish brown residue on heating which turned yellow on cooling

A
  • PbO formed, Pb2+ present
44
Q

White to yellow residue when hot, turned yellow on cooling

A

ZnO formed, Zn2+ formed

UACE Chemistry (27 decks)

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