tastymemes
Quiz by , created more than 1 year ago

Test on colours for Hydroxides, Oxides, and Chlorides of transition metals, along with their (aq) oxidation states, for edexcel A2 chemistry, 2015.

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Transition Metals - Colours

Question 1 of 10

2

Which of these are the correct oxide colours for those transition metals listed?

Select one or more of the following:

  • MnO - Green

  • Cr2O3 - violet

  • Fe(II)O - Dark Red

  • Fe2(III)O3 - Black

  • NiO - Blue

  • CuO - Black

  • Cu2(I)O - Black

Explanation

Question 2 of 10

1

The colours for V in its various oxidation states are as follows:

V 2+ - Violet
V 3+ - Green
V 4+ - Blue
V 5+ (VO3- and VO2+) - Yellow

Select one of the following:

  • True
  • False

Explanation

Question 3 of 10

1

Which of these colours are correct for the listed compounds and oxidation states of Mn?

Select one or more of the following:

  • MnO - Pale Pink

  • MnCl2.2H2O - Brown

  • [Mn(H2O)6] 2+ - Purple

  • MnO4 2- (aq) - Pale Pink

  • MnO4- (aq) - Purple

Explanation

Question 4 of 10

1

What colour is CuCl2?

Select one of the following:

  • Green

  • Blue

  • Red

  • Black

  • Brown

Explanation

Question 5 of 10

1

[CuCl4] 2- is yellow.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 10

1

NiCl2 is what colour?

Select one of the following:

  • Yellow

  • Green

  • Blue

  • Purple

Explanation

Question 7 of 10

6

Which of these are the correct colours for their listed transition metal chlorides?

Select one or more of the following:

  • CrCl2 - Green

  • CrCl3 - Violet

  • CrCl3.6H2O - Violet

  • FeCl2 - Brown

  • FeCl3 - depends on the angle it is viewed at.

  • NiCl2 - Green

  • NiCl2.6H2O - Green

  • CuCl2.H2O - Green

  • CuCl - Green

Explanation

Question 8 of 10

1

Cu2(I)O is red.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 10

1

Cr2O3 is what colour?

Select one of the following:

  • Yellow

  • Blue

  • Violet

  • Green

  • Purple

Explanation

Question 10 of 10

1

Cu(OH)2 is a blue solution.

Select one of the following:

  • True
  • False

Explanation

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