When anhydrous cobalt chloride paper is exposed to water, what color change is observed?
- From pink to blue
- From white to blue
- From blue to white
-
From blue to pink
The correct answer is: D
Explanation
nhydrous cobalt chloride paper is blue in the absence of water. However, when it comes into contact with water, it undergoes a color change to pink due to the formation of hydrated cobalt chloride.
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