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प्रश्न
Write the chemical formula.
Washing soda
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उत्तर
Na2CO3.10H2O
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संबंधित प्रश्न
Name the sodium compound which is used for softening hard water.
Give two important uses of washing soda.
Sodium hydrogencarbonate is ______ soda whereas sodium carbonate is ______ soda.
What is washing soda?
State two properties of washing soda.
Write the formula of sodium chloride.
What is meant by “water of crystallisation” in a substance? Explain with an example.
State two uses of the following compound:
Hydrogen
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?
Write the name and formula of one salt which contains:
Ten molecules of water of crystallisation.
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.
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 ______.
