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प्रश्न
Give two important uses of washing soda.
Give two important uses of washing soda (or sodium carbonate).
उत्तर
Two important uses of washing soda are:
- It is used in the manufacture of glass, soap, paper and sodium compounds, such as borax.
- It is used to remove permanent hardness of water.
- It is used as an electrolyte.
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संबंधित प्रश्न
Name the sodium compound which is used for softening hard water.
Name a metal carbonate which is soluble in water.
State two properties and two uses of washing soda.
Write the formulae of sodium chloride and sodium carbonate.
What is meant by "water of crystallisation" in a substance? Explain with an example.
Name a sodium compound which is used for making borax and glass.
Describe how washing soda is produced starting from sodium chloride (common salt). Write equations of all the reactions involved.
State whether an aqueous solution of washing soda is acidic or alkaline? Give reason for your answer.
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?
Write the name and formula of one salt each which contains:
ten molecules of water of crystallisation
How many molecules of water of crystallisation (per formula unit) are present in:
washing soda?
The number of molecules of water of crystallization in washing soda is ______.
Write the chemical formula.
Washing soda
Correct the mistakes:
- Washing soda is used for making cakes and bread soft, spongy.
- Calcium sulphate hemihydrate is used in textile industry for bleaching cloths.
Na2CO3.10H2O is ____________.
The name of the salt used to remove permanent hardness of water is ______.
