Colours

Question 1

What colour is Ba2+ at its base?

Answer 1

Blank (Colourless)

Question 2

What colour is Ca2+ at its base?

Answer 2

Blank(Colourless)

Question 3

What colour is Pb2+ at its base?

Answer 3

Blank(Colourless)

Question 4

What colour is Mg2+ at its base?

Answer 4

Blank(Colourless)

Question 5

What chemical formula produces a bright yellow? (similar to a chair)

Answer 5

PbI2 (Lead Iodide)

Question 6

What colour is produced by PbI2+

Answer 6

Bright yellow (similar to a school chair)

Question 7

What colour is Cu2+ at its base?

Answer 7

Blue

Question 8

Cu2+ remains blue throughout majority of its chemical transformations, with one exception, what is this exception?

Answer 8

CuI2 (Copper Iodide)

Question 9

What colour is produced by the chemical CuI2?

Answer 9

Dark Green/Brown

Question 10

What two chemical products involving Cu2+ resemble jellyfish due to the formation of precipitate?

Answer 10

CuCO3 and Cu(OH)2

Question 11

What colour is Fe2+ at its base?

Answer 11

Pale Green

Question 12

What colour is Fe3+ at its base?

Answer 12

Brown

Question 13

Fe3+ is brown is most solutions with the exception of two, what are these two solutions?

Answer 13

Fe2(SO4)3 and Fe2(PO4)3

Question 14

Fe2(SO4)3 and Fe2(PO4)3 produce the same ‘piss’ colour, how can the two be told apart?

Answer 14

Fe2(PO4)3 is chunky in solution
Fe2(SO4)3 is smooth in solution

Question 15

What colour is Ag+ at its base?

Answer 15

Blank(Colourless)

Question 16

With what chemicals does Ag+ form a White/Yellow colour?

Answer 16

PO4, CO3, Iodide

Question 17

What colour is produced by AgOH-

Answer 17

Brown