3. An element A reacts with water to form a compound B which is used in white washing. The
compound B on heating forms an oxide which on treatment with water gives back B. Identify A, B
and C and give the reactions involved.
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3. An element A reacts with water to form a compound B which is used in white washing. The
compound B on heating forms an oxide which on treatment with water gives back B. Identify A, B
and C and give the reactions involved.
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Answer:
A is CALCIUM which forms B (it is CALCIUM HYDROXIDE) when reacts with water, which is used in whitewashing
B (CALCIUM HYDROXIDE) on heating forms an oxide (It is CALCIUM OXIDE) which on treatment with water gives back B (CALCIUM HYDROXIDE)
Upto now must got ::
What is Compound A ---- it is CALCIUM
What is Compound B ---- it is CALCIUM HYDROXIDE
What is Compound C ---- it is CALCIUM OXIDE
Reaction :
Calcium Hydroxide (Ca(OH)2) ------- heat ------- Calcium Oxide (CaO) + Water
And vice versa