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Igcse chemistry ol > ch 10 > Flashcards

ch 10 Flashcards

1
Q

What are the metal ions you can test for using a flame?

A

Lithium Li+
Sodium Na+
Potassium K+
Calcium Ca²+
Barium Ba²+
Copper (II) Cu²+

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2
Q

What flame color does sodium Na+ have?

A

Yellow.

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2
Q

What flame color does potassium K+ have?

A

Lilac.

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3
Q

What flame color does lithium Li+ have?

A

Red

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4
Q

What flame color does calcium Ca²+ have?

A

Orange-red.

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5
Q

What flame color does barium Ba²+ have?

A

Light-green.

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6
Q

What flame color does copper (II) Cu²+ have?

A

Blue-green.

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7
Q

What are the anions?

A

Chloride Cl⁻
Carbonate CO₃²⁻
Bromide Br⁻
Iodide I⁻
Sulfate SO₄²-
Sulfite SO²⁻ ₃
Nitrate NO⁻ ₃

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8
Q

How do you test for Chlorine Cl⁻ and what is the test result (anion)?

A

Acidify with dilute nitric acid, then add aqueous silver nitrate (white ppt).

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9
Q

How do you test for Carbonate CO₃²⁻ and what is the test result (anion)?

A

Add dilute acid, then test for carbon gas (effervescence, carbon dioxide produced).

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10
Q

How do you test for Bromide Br⁻ and what is the test result (anion)?

A

Acidify with dilute nitric acid, then add aqueous silver nitrate (cream ppt).

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11
Q

How do you test for Iodide I⁻ and what is the test result (anion)?

A

Acidify with dilute nitric acid then add aqueous silver nitrate (yellow ppt).

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12
Q

How do you test for Sulfate SO₄²- and what is the test result (anion)?

A

Acidify with nitric acid then add aqueous barium nitrate (white ppt).

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13
Q

How do you test for Sulfite SO²⁻ ₃ and what is the test result (anion)?

A

Add a small volume of acidified aqueous potassium manganate (VII)
(the acidified aqueous potassium manganate (VII) changes color from purple to colorless).

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14
Q

Q
How do you test for Nitrate NO⁻ ₃ and what is the test result (anion)?

A

Add aqueous sodium hydroxide to aluminium foil and warm carefully (ammonia produced).

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15
Q

How do you test for Al and what is the test result (cation)?

A

add aqueous sodium hydroxide
white ppt,soluble in excess giving colorless sol
add aqueous ammonia will form white ppt insoluble in excess

16
Q

How do you test for ammonium and what is the test result (cation)?

A

add aqueous sodium hydroxide
ammonia produced on warming

17
Q

How do you test for calcium and what is the test result (cation)?

A

add aqueous sodium hydroxide
white ppt,isoluble in excess
add aqueous ammonia will form no ppt

18
Q

How do you test for Cr and what is the test result (cation)?

A

add aqueous sodium hydroxide
green ppt,soluble in excess
add aqueous ammonia will form green ppt insoluble in excess

19
Q

How do you test for iron 2 and what is the test result (cation)?

A

add aqueous sodium hydroxide
green ppt, insoluble in excess turning brown
add aqueous ammonia
green ppt, insoluble in excess turning brown

20
Q

How do you test for iron 3 and what is the test result (cation)?

A

add aqueous sodium hydroxide
red-brown ppt, insoluble in excess
add aqueous ammonia
red-brown ppt, insoluble in excess turning brown

21
Q

How do you test for zinc and what is the test result (cation)?

A

add aqueous sodium hydroxide
white ppt, soluble in excess giving colorless sol
add aqueous ammonia
white ppt, soluble in excess giving colorless sol

22
Q

How do you test for cu and what is the test result (cation)?

A

add aqueous sodium hydroxide
light blue ppt, insoluble in excess
add aqueous ammonia
light blue ppt, soluble in excess giving dark blue sol

23
Q

How do you test for SO2 and what is the test result (gas)?

A

turns acidified aqueous potassium manganate from purple to colorless

24
Q

copper colour in flame

A

blue-green

25
Q

iron colour in flame

A

gold

26
Q

Magnesium colour in flame

A

bright white

Igcse chemistry ol (8 decks)

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