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प्रश्न
Answer the following question.
How is washing soda prepared from sodium carbonate? Give its chemical equation. State the type of this salt. Name the type of hardness of water that can be removed by it?
उत्तर
Washing soda is prepared from sodium carbonate by recrystallization.
\[\ce{\underset{\text{Sodium carbonate}}{Na2CO3}+{10H_2O}->\underset{\text{Washing soda}}{Na2CO3.10H2O}}\]
Washing soda is a basic salt. It is used for removing the permanent hardness of the water.
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संबंधित प्रश्न
Name a metal carbonate which is soluble in water.
Fill in the following blank:
Sodium hydrogen carbonate is .................. soda whereas sodium carbonate is ................. soda.
What is meant by "water of crystallisation" in a substance? Explain with an example.
State two uses each of the following compounds:
Hydrogen
What is meant by saying that washing soda has detergent properties?
Consider the following substances:
NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
Which four substances are utilised in the production of washing soda?
The number of molecules of water of crystallization in washing soda is ______.
Give a scientific explanation.
The hard water of a well becomes soft on adding washing soda to it.
Na2CO3.10H2O is ____________.
Correct the wrong statement given below:
Magnesium hydroxide is used in whitewashing buildings.
