Question

When sodium and chlorine make table salt, it releases heat during the reaction. *

1 point
A change in color
A new odor is produced
Gas is produced
The temperature changes
A solid is formed (precipitate)
Light is released
Mixing vinegar and baking soda causes bubbles. *
1 point
A change in color
A new odor is produced
Gas is produced
The temperature changes
A solid is formed (precipitate)
Light is released

Answer 1

Which by-product of the chloralkali process is used for the manufacture of bleaching powder?

Ans. Chlorine (Cl2).

Q. 21. Which compound of calcium is used for sterilization of drinking water?

Ans. Bleaching powder (CaOCI2)

Q. 22. What is the action of sulphuric acid on bleaching powder?

Ans. CaOCl2+H SO4 —>CaSO4+H2O+ Cl2

Q.23. What happens when bleaching powder is kept in the air?

or Why bleaching powder gives out a typical smell in the air?