Question

Chlorine gas reacts with to form bleaching powder. (a) dry Ca(OH)2 (b) dil. solution of Ca(OH)2 (c) conc. solution of Ca(OH)2 (d) dry CaO

Answer 1

Question -

Chlorine gas reacts with _____ to form bleaching powder.

Answer -

a) Dry Ca(OH)²

To prove our Answer -

• Ca(OH)² = Dry slaked lime.
• Chlorine gas reacts with Dry slaked lime to form Bleaching powder.
• We should take Dry slaked lime not dilute or concentrated one.
• CaO = Calcium Oxide,
• If we react CaO with Chlorine gas then it doesn't form bleaching powder.

Answer 2

The correct option is (a) which is dry Ca(OH)₂

Dry slaked lime reacts with chlorine gas to form bleaching powder.

Dry slaked lime is dry Ca(OH)₂.

• Chlorine gas is kept in the cylinder, where it moves upward towards the inlet and reacts with the dry slaked lime to form bleaching powder.
• Bleaching powder is a white powder that smells like chlorine. It is also called chloride of lime, or chlorinated lime.
• Bleaching powder is soluble in water.

The following are the reaction that takes place to form bleaching powder.

2Ca(OH)₂ + 2Cl₂ → Ca (OCl)₂ + CaCl₂ + 2H₂

So the correct answer is dry Ca(OH)₂ and the correct option is (a).