Chemistry > cations Test > Flashcards

cations Test Flashcards

(13 cards)

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1
Q

Lithium ions

A

Crimson flame

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2
Q

Sodium ions

A

Yellow flame

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3
Q

Potassium ions

A

Lilac flame

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4
Q

Calcium ions

A

Orange red flame

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5
Q

Copper ions

A

Green flame

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6
Q

Step 1 flame test

A

Clean a platinum wire loop by dipping it in hcl

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7
Q

Step 2 flame test

A

Dip into sample you want to test and put back in flame

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8
Q

Calcium (ca2+)

A

White precipitate

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9
Q

Copper (II) cu2+

A

Blue

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10
Q

Iron (II) Fe2+

A

Green

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11
Q

Aluminum (Al3+)

A

White at first
Redissolves in excess NaOH to form colourless

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12
Q

Magnesium mg2+

A

White

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13
Q

Step 1 multiple ions

A

Add few drops of sodium hydroxide

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