Advertisement Remove all ads

The Metal Salt a is Blue in Colour. When Salt a is Heated Strongly Over a Burner, Then a Substance B is Eliminated and a White Powder C is Left Behind. When a Few Drops of a Liquid D Are Added to Powder C, It Becomes Blue Again. What Could Be A, B, C and D - Science

The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A, B, C and D

Advertisement Remove all ads

Solution

Copper sulphate crystals (A) are blue and have the chemical formula CuSO4.5H2O. When copper sulphate crystals are heated strongly, they lose all the water of crystallisation (B) and form anhydrous copper sulphate (C), which is white.
     A                        C            B
CuSO4.5H2O  →  CuSO4  + 5H2O
Anhydrous copper sulphate turns blue on addition of a few drops of water (D) because it gets hydrated again.
        C              D
CuSO4 + 5H2O → CuSO4.5H2O

Concept: Salts
  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Lakhmir Singh Class 10 Chemistry (Science)
Chapter 2 Acids, Bases and Salts
Q 70 | Page 100
Advertisement Remove all ads

Video TutorialsVIEW ALL [1]

Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×