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Eddie's Chemistry > Acids, bases and salts > Flashcards

Acids, bases and salts Flashcards

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1
Q

Are sodium salts soluble

A

Yes, all of them

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2
Q

Are ammonium salts soluble

A

Yes, all of them

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3
Q

Are potassium salts soluble

A

Yes, all of them

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4
Q

Are common chlorides soluble?

A

Yes, apart from lead (II) and silver chloride

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5
Q

Are common sulphates soluble?

A

Yes, apart from lead (II), calcium and barium sulphate

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6
Q

Are most common carbonates insoluble?

A

Yes, apart from sodium, potassium, ammonium carbonate

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7
Q

Are most common hydroxides insoluble?

A

Yes apart from sodium, potassium and ammonium hydroxide?

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8
Q

Gas test for oxygen

A

Relights glowing splint

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9
Q

Gas test for hydrogen

A

Sqeaky pop with lit splint

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10
Q

Test for chlorine gas

A

Damp blue litmus turns red then bleaches white

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11
Q

Test for ammonia

A

Turns damp red litmus blue

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12
Q

Test for carbon dioxide

A

Turns limewater from clear to milky

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13
Q

Test for sulphate gas

A

Turns potassium manganate from purple to colourless

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14
Q

Flame test for Li+

A

Crimson flame

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15
Q

Flame test for Na+

A

Yellow flame

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16
Q

Flame test for K+

A

Lilac flame

17
Q

Flame test for Cu2+

A

Blue/Green flame

18
Q

Flame test for Ca2+

A

Brick red flame

19
Q

Flame test for Ba2+

A

Apple green flame

20
Q

What colour does acid turn phenolphthalein

A

colourless

21
Q

What colour does alkali turn phenolphthalein

A

Pink

22
Q

What colour does methyl orange turn

A

Red in acid

Yellow in neutral and colourless

23
Q

When do you use a titration

A

When it is a soluble salt

24
Q

Explain how to conduct a titration

A

Add a known volume of alkali to a conical flask from a pipette

Add a few drops of indicator e.g. phenolphthalein

Add measured volume of acid from a burette

Stop adding acid when it has changed colour

Repeat three times to receive concordant results

25
Q

How to react an insoluble salt with an acid

A

Add excess of the insoluble solid a little at a time while stirring glass rod to hot acid

Filter to remove excess solid

Evaporate resulting solution and leave in the sun to crystallise

Dry crystals between filter papers

26
Q

How to make an insoluble salt

A

Made by mixing two soluble salts

After mixing filter the solution to receive insoluble precipitate

leave crystals to dry

Eddie's Chemistry (14 decks)

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