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Chemistry MATTERS > Salts > Flashcards

Salts Flashcards

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1
Q

Salts are

A

**ionic ** compounds

THEY CONTAIN A ANION AND CATION

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2
Q

State 2 methods to create soluble salt

A
  1. Reacting an acid with a metal, insoluble base/carbonate
  2. Titration
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3
Q

How to create insoluble salt?

A

Precipitation
mixing 2 solutions to form an insoluble solid that separates from the reaction mixture

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4
Q

When Zn2+ ion, Al3+ ion or Pb2+ ion is reacted with NaOH, what happens?

A

Few drops:
white ppt
Excess:
dissolve to form colourless solution

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5
Q

Reaction when Ca2+ ion reacted with NaOH…

A

Few drops:
white ppt
Excess:
ppt insoluble in excess

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6
Q

Reaction when Cu2+ ion reacted with NaOH…

A

Few drops:
light blue ppt
Excess:
ppt insoluble in excess

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7
Q

Reaction when Fe2+ ion reacted with NaOH…

A

few drops:
green ppt
Excess:
ppt insoluble in excess

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8
Q

Reaction when Fe3+ ion reacted with NaOH…

A

few drops:
reddish brown ppt
Excess:
ppt insoluble in excess

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9
Q

Reaction when NH4+ ion reacted with NaOH…

A

few drops:
no ppt
excess:
no change observed

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10
Q

Reaction when Ca2+ ion reacted with NH3…

A

few drops:
no ppt
excess:
no ppt

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11
Q

Reaction when Al3+ & Pb2+ ion reacted with NH3…

A

few drops:
white ppt
excess:
ppt insoluble in excess

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12
Q

Reaction when Zn2+ ion reacted with NH3…

A

few drops:
white ppt

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13
Q

Reaction when Zn2+ ion reacted with NH3…

A

few drops:
white ppt
excess:
ppt dissolve to form colourless solution

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14
Q

Reaction when Cu2+ ion reacted with NH3…

A

few drops:
light blue ppt
excess:
ppt dissolve to form deep blue solution

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15
Q

Reaction when Fe2+ ion reacted with NH3…

A

few drops:
green ppt
excess:
ppt insoluble

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16
Q

Reaction when Fe3+ ion reacted with NH3…

A

few drops:
reddish brown ppt
excess:
ppt insoluble

17
Q

Identify H2 gas

A

no colour no smell
test with lighted splint
lighted splint extinguish with pop

18
Q

Identify O2 gas

A

no colour no smell
test with glowing splint
glowing splint rekindle

19
Q

Identify Co2 gas

A

no colour no smell
bubble gas through limewater
white ppt formed

20
Q

Identify Cl2 gas

A

greenish yellow gas
pungent smell
moist red litmus paper turn blue then bleached

21
Q

Identify SO2 gas

A

colourless but pungent smell
Use KMnO4 turn colourless

22
Q

Identify NH3 gas

A

colourless but pungent smell
Moist red litmus paper turn blue

23
Q

Identify CO3 ion

A

add dilute HCL
pass gas into limewater
white ppt observed

24
Q

Identify NO3- ion

A

add NaOH then piece of Al foil
effervescence and red litmus paper turns blue

25
Q

Identify SO4 ion

A

add dilute nitric acid then add BaNO3 solution
white ppt formed

26
Q

Identify Cl- ion

A

add dilute nitric acid, the add silver nitrate solution
white ppt formed

27
Q

Identify I- ions

A

add dilute nitric acid, the add silver nitrate solution
yellow ppt formed

28
Q

Test for water

A

anydrous Cu2SO4
should turn blue if water present

Chemistry MATTERS (13 decks)

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