Flame Test and Confirmation Test- Triple only Flashcards by Mr Hirst | Brainscape

Q

Colour of Sodium Na+

A

Bright Orange/Yellow

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Q

Colour of Potassium K+

A

Lilac

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Q

Colour of Calcium Ca2+

A

Red

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Q

Colour of Lithium, Li+

A

Crimson

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Q

Colour of Barium, Ba2+

A

Green

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Q

How do you carry out a flame test?

A

Dip the wire in HCl

Dip it in the sample

Place in a blue flame

Record colour

Clean the wire with Conc HCl

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Q

What substance do you use for the confirmation test?

A

Sodium Hydroxide

NaOH

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Q

Aluminium Al3+ with Sodium Hydroxide

A

White insoluble precipitate

That does dissolve

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Q

Calcium Ca+ with Sodium Hydroxide

A

White insoluble precipitate

That doesn’t dissolve

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Q

Magnesium Mg2+ with Sodium Hydroxide

A

White insoluble precipitate

That doesn’t dissolve

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Q

Copper (II) Cu 2+

A

Blue insoluble precipitate

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Q

Iron (II) Fe 2+

A

Green insoluble precipitate

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Q

Iron (II) Fe 3+

A

Brown insoluble precipitate

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Q

How do you carry out the sodium hydroxide test?

A

Dissolve the salt in water

Add 4 drops of sodium hydroxide

Add 2 pipette full of sodium hydroxide

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