Question

Give the common name, formula, preparation and uses for the chemical name - chlorine.

Answer 1

Chlorine:
Common name : Chlorine
Formula : In elemental form it occurs as Cl^- (chloride ion such as NaCl) or chlorine gas Cl₂
Preparation :
Almost all chlorine in the Earth's crust occurs as chloride ion in various ionic compounds such as NaCl. Commercially it is produced from electrolysis of brine solution (NaCl solution).

2NaCl(l) → 2Na(l) + Cl₂(g)

The half-reactions involved in this process are:

Reduction: 2Na⁺(l) + 2e^- → Na(s)

Oxidation 2Cl^-(l) → Cl₂ (g) + 2e^-

​Uses :
1.In form of NaCl it is the vital compound for almost all the classes of living beings.
2. It is used in bleaching agents.
3. It is used as disinfectant.
4. It is the constituent of many well known polymer like PVC (polyvinyl chloride)