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Test for Ions Flashcards

(45 cards)

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1
Q

Magnesium Mg2+

A

NaOH Dropwise= Slight White precipitate
NaOH Excess= White precipitate
Dilute H2SO4 Dropwise= Slight white precipitate
Dilute H2SO4 Excess=Colourless solution

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2
Q

Calcium Ca2+

A

Flame Test=Brick-Red Flame
NaOH Dropwise/NaOH excess/ Dilute H2SO4 Dropwise/Dilute H2SO4 Excess= ALL
Slight White Precipitate

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3
Q

Strontium Sr2+

A 
Flame Test=Red flame
NaOH Dropwise=Slight White Precipitate
NaOH excess=Slight White Precipitate
Dilute H2SO4 Dropwise=White Precipitate 
Dilute H2SO4 excess=White Precipitate
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4
Q

Barium Ba2+

A

Flame Test= pale green
NaOH Dropwise and excess= No Change
Dilute H2SO4 Dropwise= White precipitate
Dilute H2SO4 excess=White precipitate

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5
Q

Ammonium NH4+

A

Reagent: 1-NaOH
2-gently heat
3- hold damp red litmus over
Observation: 1-Production of ammonia gas
2-litmus turns blue

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6
Q

Sulfate SO4 2-

A

Reagent: 1-dilute HCl, 2- BaCl2
Observation: Insoluble White precipitate (BaSO4)

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7
Q

Hydroxide OH-

A

1-Reagent:Red litmus Paper
Observation:Goes blue
2-pH Metre

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8
Q

Carbonate CO3 2-

A

Reagent 1- dilute HCL
Observation: 1-effervescence
2-limewater goes milky white cloudy

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9
Q

Chloride (aq)

A

Reagent: 1-Dilute HNO3 2-silver nitrate solution
Observation: White Precipitate
Dissolves in dilute NH3

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10
Q

Bromide (aq)

A

Reagent: 1-Dilute HNO3, 2- Silver Nitrate Solution =
Observation: Cream precipitate
Dissolves in conc NH3

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11
Q

Iodide (aq)

A

Reagent: 1-Dilute HNO3, 2-Silver nitrate solution Observation: Yellow precipitate
Insoluble in conc NH3

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12
Q

Na2O

A

Air

Water

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13
Q

MgO

A

Air

Water

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14
Q

Al2O3

A

Air

Water

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15
Q

SiO2

A

Air

Water

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16
Q

P4O10

A

Air

Water

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17
Q

SO2

A

Air

Water

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18
Q

Primary Alcohol

A

-

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19
Q

Secondary Alcohol

20
Q

Tertiary Alcohol

21
Q

Aldehyde

Study These Flashcards
A 
Reagent: Fehling's solution 
Observation: Blue solution to Brick Red precipitate
Or
Reagent: Tollen’s reagent 
Observation: Silver mirror formed
22
Q

Ketone

Study These Flashcards
A 
Reagent: Fehling's solution 
Observation: stays blue no change 
Or
Reagent: Tollen’s reagent 
Observation: no change
23
Q

Alkane

Study These Flashcards
A 
Reagent: Bromine water 
Observation: stays orange
Or 
Reagent: acidified KMnO4
Observation:stays purple
24
Q

Alkene

Study These Flashcards
A 
Reagents: Bromine water
Observation: orange to Colourless 
Or
Reagent: acidified KMnO4
Observation: colourless
25
Carboxylic Acid
Reagent: Na2SO4 Observation: Effervescence + CO2 Reagent: Mg Observation: effervescence + H2gas
26
Ester
Na2SO4=No change | Mg= No change
27
Primary Amine
-
28
Secondary Amine
-
29
Tertiary Amine
-
30
Copper Cu2+
-
31
Iron Fe2+
-
32
Aluminium Al3+
-
33
Iron Fe3+
-
34
Halogenoalkane test
-
35
acid anhydride
-
36
Acyl Chloride
Reagents: 1-dilute nitric acid 2-Silver nitrate solution Observation: 1- Steamy Fumes of HCl 2- White precipitate (AgCl)
37
Chloride solid
Reagent: 1-conc H2SO4 2-damp blue litmus paper Observation: 1-effervescence, 2-litmus paper goes red 3- As HCl produced
38
Bromide Solid
Reagent: 1-conc H2SO4 2-filter paper dipped in acidified K2Cr2O7 Observation: 1- effervescence 2-brown gas produced 3-red brown solution
39
Iodide Solid
Reagent:1- conc H2SO4 2-filter paper dipped in lead nitrate solution Observation: 1-Brown gas produced (Br2) 2-Solution turns red/brown 3-Paper turns black
40
NaF
Reagent: H2SO4 Observation: 1- HF=Steamy white fumes 2- Na2SO4= white solid
41
NaCl
Reagent: H2SO4 Observation: 1-HCl=Steamy White fumes 2-Na2SO4= White solid
42
NaBr
Reagent: H2SO4 Observation: 1- HBr= Steamy white fumes 2- Br2= orange fumes 3-SO2= Choking fumes/Colourless acidic 4-Na2SO4= White solid
43
NaI
Reagent: H2SO4 Observation: 1-HI= steamy white fumes 2-Na2SO4= White solid 3-H2S= Bad egg smell 4- SO2= Choking fumes/colourless acidic 5-S= Yellow solid
44
Silver nitrate
Reagent: HBr Observation: Cream precipitate
45
Halogenoalkane
Reagent: 1-NaOH (nucleophilic Sub) Removes halide ion 2-acidified (dil HNO3) AgNO3 Observation: White/Cream/Yellow precipitate

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