Colour of cobalt chloride solution is:...

Colour of cobalt chloride solution is:

A

Pink

B

Black

C

Colourless

D

Green

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The correct Answer is:

A

Colour of anhydrous `CoCl_(2)` is blue and when it comes in contact with moisture then it turns in pink.

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Anhydrous cobalt(II) chloride is blue in blue in colour but on dissolving in water it changes to pink in colour because