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tests Flashcards

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1
Q

test for lithium ion

A

flame test
crimson red

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2
Q

sodium ion

A

flame test
yellow flame

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3
Q

potassium ion

A

flame test
lilac flame

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4
Q

calcium ion

A

flame test
orange red flame

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5
Q

copper ion

A

flame test
blue green flame

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6
Q

barium ion

A

flame test
light green flame

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7
Q

test for chlorine gas

A

damp litmus paper
bleaches

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8
Q

test for ammonia

A

damp red litmus
turns blue

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9
Q

test for oxygen

A

glowing splint
relights/reglows

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10
Q

test for hydrogen

A

lighted splint
pop sound

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11
Q

test for sulfur dioxide

A

acidified potassium manganate
turns from purple to colorless

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12
Q

test for carbon dioxide

A

limewater turns milky

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13
Q

test for chloride

A

acidify with dilute nitric acid
add silver nitrate (or lead nitrate)

white ppt.

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14
Q

test for bromide

A

acidify with dilute nitric acid
add silver nitrate (or lead nitrate)

cream ppt.

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15
Q

test for iodide

A

acidify with dilute nitric acid
add silver nitrate (or lead nitrate)

yellow ppt.

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16
Q

test for sulfite

A

acidified potassium manganate

purple to colorless

17
Q

test for sulfate

A

acidify with dilute nitric acid
add barium nitrate

white ppt.

18
Q

test for carbonate

A

acidify with dilute acid

effervescence (of CO2 gas)

19
Q

test for nitrate

A

add sodium hydroxide
add aluminium foil (powder)
warm

pungent smelling gas (NH3)

20
Q

aluminium with sodium hydroxide

A

white ppt. soluble in excess
colorless solution

21
Q

aluminium with ammonia

A

white ppt. insoluble in excess

22
Q

ammonium with sodium hydroxide

A

ammonia produced on warming

23
Q

chromium with sodium hydroxide

A

green ppt.
soluble in excess of

24
Q

chromium with ammonia

A

green ppt.
insoluble in excess

25
Q

calcium in sodium hydroxide

A

white ppt.
insoluble in excess

26
Q

calcium in ammonia

A

no ppt. / slightly white ppt.

27
Q

copper in sodium hydroxide

A

light blue ppt.
insoluble in excess

28
Q

copper in ammonia

A

light blue ppt.
soluble in excess to form dark blue solution

29
Q

iron 2 in sodium hydroxide

A

green ppt.
insoluble in excess
brown near surface on standing

30
Q

iron 2 in ammonia

A

green ppt.
insoluble in excess
brown near surface on standing

31
Q

iron 3 in sodium hydroxide

A

red-brown ppt.
insoluble in excess of

32
Q

iron 3 in ammonia

A

red-brown ppt.
insoluble in excess

33
Q

zinc in sodium hydroxide

A

white ppt.
soluble in excess to give colorless solution

34
Q

zinc in ammonia

A

white ppt.
soluble in excess to give colorless solution

chem (4 decks)

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