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Chemistry > Cation tests > Flashcards

Cation tests Flashcards

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1
Q

Colour of precipitate of calcium and sodium hydroxide

A

White precipitate insoluble in excess

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2
Q

Colour of precipitate of zinc and sodium hydroxide

A

White precipitate soluble in excess to form a colour less solution

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3
Q

Colour of precipitate of aluminium and sodium hydroxide

A

White precipitate soluble in excess to form a colourless solution

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4
Q

Colour of precipitate of lead and sodium hydroxide

A

White precipitate soluble in excess to form a colourless solution

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5
Q

Colour of precipitate of Fe(II) and sodium hydroxide

A

Green precipitate insoluble in excess

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6
Q

Colour of precipitate of Fe(III) and sodium hydroxide

A

Red-brown precipitate insoluble in excess

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7
Q

Colour of precipitate of copper(II) and sodium hydroxide

A

Blue precipitate insoluble in excess

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8
Q

Colour of precipitate of ammonium and sodium hydroxide

A

No precipitate formed but releases ammonia gas (NH3) when heated

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9
Q

Colour of precipitate of calcium and dilute aq ammonia

A

No precipitate formed

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10
Q

Colour of precipitate of zinc and dilute aq ammonia

A

White precipitate soluble in excess to form a colourless solution

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11
Q

Colour of precipitate of aluminium and dilute aq ammonia

A

White precipitate insoluble in excess

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12
Q

Colour of precipitate of lead and dilute aq ammonia

A

White precipitate insoluble in excess

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13
Q

Colour of precipitate of Fe(II) and dilute aq ammonia

A

Green precipitate insoluble in excess

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14
Q

Colour of precipitate of Fe(III) and dilute aq ammonia

A

Red-brown precipitate insoluble in excess

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15
Q

Colour of precipitate of copper(II) and dilute aq ammonia

A

Blue precipitate soluble in excess to form a dark blue solution

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