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Testing for Cations

Authored by The Plug

Chemistry

12th Grade

Used 5+ times

Testing for Cations
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

I form a pale blue precipitate in NaOH.

iron(II) ions

copper(II) ions

iron(III) ions

nickel(II) ions

manganese(II) ions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

I form a green precipitate in NaOH which turns brown on standing.

iron(II) ions

copper(II) ions

iron(III) ions

nickel(II) ions

manganese(II) ions

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

I form a cream precipitate in NaOH which turns brown on standing.

iron(II) ions

copper(II) ions

iron(III) ions

nickel(II) ions

manganese(II) ions

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Group 1 cations and ammonium form...

a white precipitate

a cream precipitate

a grey-green precipitate

no precipitate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Magnesium, calcium, strontium and barium ions all form white precipitates which do not dissolve in XS NaOH. How can they be distinguished?

Flame Test

Litmus Test

Universal indicator paper

Reaction with aq. ammonia

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Zinc(II) and aluminium(II) ions can be distinguished by using aq. ammonia.

True

False

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calcium, barium and strontium ions form strong white precipitates with aq. ammonia.

True

False

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