Steam changes the colour of anhydrous cobalt (II) chloride from

Assessment: JAMB UTME - Chemistry - 2002 Subject: Chemistry

Question 1 Report

Steam changes the colour of anhydrous cobalt (II) chloride from
Answer Details
Anhydrous cobalt (II) chloride is blue in color, but when steam is passed over it, the blue color disappears and the compound turns pink. Therefore, the answer is "blue to pink". This is due to the fact that the cobalt (II) chloride reacts with the water in the steam to form pink hexahydrate cobalt (II) chloride.
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