Welcome to the Quiz!

This quiz contains 10 questions from a mix of 1 subtopics.

In the presence of ammonia, damp red litmus paper turns .

blue

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Which of the following ions does not form a precipitate when reacted with excess aqueous sodium hydroxide?

Fe3+

Fe2+

Mn2+

Cr3+

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Which of the following ions forms an blue precipitate when reacted with aqueous sodium hydroxide?

Fe2+

Fe3+

Cu2+

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What is the product of the reaction between iron(III) ions and ammonia?

Fe(H2O)2(OH)4

Fe(H2O)4(OH)2

Fe(H2O)4(OH)3

Fe(H2O)3(OH)3

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What is the formula of the product formed when aqueous copper ions react with excess aqueous ammonia?

Cu(NH3)4(OH)2

[Cu(H2O)6]2+

Cu(H2O)4(OH)2

[Cu(NH3)4(H2O)2]2+

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What is the colour of the solution formed when excess ammonia is added to copper(II) hydroxide?

light brown

dark green

pale blue

deep blue

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Which of the following ions does NOT form a precipitate when reacted with excess aqueous ammonia?

(Select all that apply).

Fe3+

Cr3+

Mn2+

Cu2+

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2

What is the colour of the precipitate formed when manganese(II) ions react with hydroxide ions?

brown

blue

green

purple

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What is the colour of the precipitate formed when aluminium(III) ions react with hydroxide ions?

blue

green

white

brown

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Which of the following ions forms a green precipitate when reacted with aqueous sodium hydroxide?

Fe2+

Cu2+

Fe3+

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1