Topic 5 Testing for Cations + Anions ( All) Flashcards

1
Q

Li+

A

Flame Test- Red flame

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2
Q

Na+

A

Flame test- Yellow flame

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3
Q

K+

A

Flame Test- Lilac flame

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4
Q

Ca2+

A

Flame test- Orange-red Flame

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5
Q

Cu2+

A

Flame test- Blue-Green Flame

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6
Q

Fe 2+

A

Add Sodium hydroxide - green ppt (Iron (II)hydroxide)

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7
Q

Fe 3+

A

Add Sodium hydroxide - brown ppt ( Iron (III) hydroxide)

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8
Q

Cu 2+

A

Add Sodium hydroxide - blue ppt ( copper (II) hydroxide)

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9
Q

NH4 +

A

Add Sodium hydroxide - No ppt- Warm- damp red litmus paper -> blue

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10
Q

Cl-

A

Add dilute nitric acid- add silver nitrate- white ppt ( Silver Chloride)

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11
Q

Br-

A

Add dilute nitric - add silver nitrate- cream ppt( Silver bromide)

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12
Q

I-

A

Add dilute nitric acid- add silver nitrate - yellow ppt( silver iodide)

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13
Q

SO4 2-

A

add nitric acid- add barium chloride - white ppt ( barium sulfate)

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14
Q

CO3 2-

A

Add nitric acid- effervescence- bubble through lime water- cloudy.

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