Write the common name formula and uses of bleaching powder, washing soda , baking soda
Answers
Answer:
Explanation:
It is the common name for sodium carbonate with the molecular formula of Na2CO3. Therefore, it is correct. - Option (C) is the bleaching powder. It is the common name for Calcium hypochlorite with the molecular formula of Ca(OCl)2.
Answer:
Bleaching powder is a pale yellowish powder existing with a strong smell of chlorine.
Its chemical formula is CaOCl2 with its chemical name as Calcium oxychloride
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
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.
Baking soda is the common name of sodium bicarbonate (also called sodium hydrogen carbonate). The chemical formula of baking soda is NaHCO3.
Chlorine produced on passing electricity through brine solution undergoes reaction with ammonia produces baking soda.
The following reaction takes place.
NaCl (brine) + H2O + CO2 + NH3 → NH4Cl + NaHCO3
uses:
This carbon-dioxide produced makes bread or cake rise thereby making them soft and spongy.
Being alkaline it is also an active ingredient in antacids that acts by neutralising the excess acid produced in the stomach.
It is also used in soda-acid fire extinguishers.
washing soda:
The heating of baking soda produces sodium carbonate.
2NaHCO3 → Na2CO3 + H2O + CO2
This sodium carbonate undergoes recrystallization to give off washing soda.
Na2CO3 + 10H2O → Na2CO3.10H2O
It is also a basic salt.
It is used for following purposes:
It is used in glass, soap and paper manufacturing industries.
It is also used in the manufacture of sodium compounds like borax.
It is also used as a cleaning agent for domestic purposes.
It also plays a pivotal role in removing permanent hardness of water.