Question

Name of all salts in chemistry and their formula?

Answer 1

Answer:

Common Salt (NaCl)

Sodium chloride is known as common salt. Its main source is sea water. It is also exists in the form of rocks and is called rock salt.

Common salt is an important component of our food. It is also used for preparing sodium hydroxide, baking soda, washing soda etc.

• Sodium hydroxide (NaOH)

Prepared by Chlor Alkali process :Electricity is passed through an aqueous solution of Sodium chloride (called brine). Sodium chloride decomposes to form sodium hydroxide. Chlorine gas is formed at the anode, and hydrogen gas at the cathode. Sodium hydroxide solution is formed near the cathode. 2NaCl(aq) + 2 H2O (l) → 2NaOH(aq) + Cl2(g) + H2(g)

• Bleaching powder:

Bleaching powder is represented as CaOCl2, though the actual composition is quite complex.

Bleaching powder is produced by the action of chlorine on dry slaked lime. Ca(OH)2 + Cl2 → CaOCl2+ H2O

• Baking soda:

Sodium hydrogen carbonate (NaHCO3) Preparation: NaCl + H2O + CO2+ NH3 → NH4Cl + NaHCO3

•Washing soda: Sodium carbonate N2CO3.10H2 In the first step, sodium carbonate is obtained by heating baking soda. 2 NaHCO3(heat) →Na2CO3 + H2O + CO2

Then washing sod a is produced by recrystallisation of sodium carbonate Na2CO3 + 10H2O → Na2CO3 .10H2O

• Plaster of Paris:

Calcium sulphate hemihydrate CaSO4. ½ H2O Prepared by heating Gypsum at 373K. CaSO4. 2H2O(Heat at 373K) → CaSO4. ½ H2O + 1½ H2O

IT TAKE TO MUCH TIME TO PREPARE THIS

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