Question

explain the formation of Nacl

Answer 1

                               Formation of NaCl:

1. Sodium has atomic number 11, shows the electronic configuration 2,8,1 to become complete by it's octet state, Sodium looses it's 1 electron and forms the sodium ion Na+ (2,8).

Sodium (Na) (2,8,1)  -------------> Sodium ion (Na+) (2,8)

2. Chlorine has atomic number 17, shows electronic configuration 2,8,7. To become complete by it's octet state, it accepts 1 electron shared by Sodium and forms the Chlorine ion Cl- (2,8,8)

Chlorine (Cl) (2,8,7) --------------> Chloride ion (Cl-) (2,8,8)

3. Due to the opposite charges, there is a attraction between this two ions and one new chemical bond is formed.

                Na₊ + Cl₋ -------------> NaCl

About Sodium Chloride:

Sodium Chloride is a common salt which is generally referred as "common salt" also. Sodium Chloride is colorless and crystalline ionic compound. By the further reactions on Sodium Chloride, Various salts like Na2Co3 and NaHCO3 are produced.

i) NaCl is generally salty in taste.

ii) It is Colourless , Neutral salt.

iii) There is no water of crystallization in it's crystalline structure.

iv) When the NaCl is heated at 800 degree Celsius, then it melts. This state of salt is called as "Fused state of salt".

Answer 2

Answer:

COMMON SALT –

• The chemical name of common salt is Sodium Chloride.
• The chemical formula of common salt is NaCl.
• Preparation - HCl + NaOH —> NaCl + H2O.

Hydrochloric acid reacts with Sodium Hydroxide to form salt that is NaCl.

Now, particularly let's look at the preparation of NaCl.

Na (Sodium) = (2, 8, 1).

Cl (Chlorine) = (2, 8, 7).

Now, here we have to remove 1 electron to complete the octet of Sodium and we have to get 1 electron to complete the octet of Chlorine.

Opposite ions helps in the formation of the compound NaCl. (Ionic formation of compounds)

Hence, the octet also completes.

• Common Salt is obtained from seawater by evaporation.
• It can also be obtained from underground deposits and thus called Rock salts.

Uses of NaCl -

• It is used as raw material in chemical industries. Example - Caustic soda, Sodium bicarbonate, etc.
• It is used in cooking food. It improves the flavour of food.
• It is also required by our body for the working of immune system.
• It is also used as a preservative in pickles.
• It is used in manufacturing of soaps.
• It is also used in melting ice. (especially in cold countries this is used to melt ice collected on roads)