write any two non related uses of bleaching powder
Answers
Bleaching Powder
Bleaching powder is a pale yellowish powder existing with a strong smell of chlorine.
It is soluble in water but due to the presence of impurities, we never observe a clear solution.
Its chemical formula is CaOCl2 with its chemical name as Calcium hypochlorite.
Calcium hypochlorite
Calcium hypochlorite
1. Preparation of Bleaching Powder
Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca(OH)2).
Ca(OH)2 + Cl2 → CaOCl2 + H2O
2. Uses of Bleaching Powder
It is used for bleaching dirty clothes in the laundry, as a bleaching agent for cotton and linen in the textile industry.
It is a strong oxidizing agent, hence used as an oxidizer in many industries.
It is used as a disinfectant which is used for disinfecting water to make potable water.
Sodium Hydroxide
Sodium hydroxide is a whitish solid, available in flakes, pellets and granules.
It is popularly known as caustic soda.
It is soluble in a polar solvent such as water but insoluble in non-polar solvents such as ether.
Sodium hydroxide
Sodium hydroxide crystal 3D ball structure
1. Preparation of Sodium Hydroxide
Sodium hydroxide is synthesized through the chloralkali process. In this process, electricity is passed through an aqueous solution of sodium chloride (commonly called brine), and the decomposition of brine takes place.
Chlorine gas is deposited at the anode while hydrogen at the cathode. The final solution of sodium hydroxide is formed at the cathode.
As NaOH (an alkali) and chlorine gas are present in the final product, this process is known as the chloralkali process.
2NaCl (aq) + 2H2O (l) → 2NaOH (aq) + Cl2 (g) + H2 (g)
Sodium Hydroxide (NaOH)
Sodium Hydroxide (NaOH)
2. Uses of Sodium Hydroxide
It is used for the manufacturing of paper, soaps, and detergents.
It is used for degreasing metals.
It is used to remove sulphurous impurities from poor quality crude oil by a process called caustic washing.
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