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प्रश्न
How many molecules of water of crystallisation (per formula unit) are present in:
washing soda?
उत्तर
Washing soda crystals (sodium carbonate crystals) contain 10 molecules of crystallisation in one formula unit. The chemical formula is Na2CO3.10H2O (sodium carbonate decahydrate).
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संबंधित प्रश्न
Name the metal whose carbonate is known as washing soda.
What is the common name of (a) NaHCO3 and (b) Na2CO3.10H2O?
Fill in the following blank:
Chemical formula of washing soda is ..................
Write the formulae of sodium chloride and sodium carbonate.
Name a sodium compound which is used for making borax and glass.
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?
Give a scientific explanation.
The hard water of a well becomes soft on adding washing soda to it.
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.
