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प्रश्न
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?
उत्तर
NaCl, NH3, H2O, CO2 are utilised in the production of washing soda.
The chemical reaction involved can be shown in three steps:
i) Production of sodium hydrogen carbonate:
NaCl + NH3 + H2O + CO2 → NaHCO3 +NH4Cl
ii) Production of anhydrous sodium carbonate upon heating sodium hydrogen carbonate:
2NaHCO3 → Na2CO3 + CO2 + H2O
iii) Production of hydrated sodium carbonate when anhydrous sodium carbonate is dissolved in water:
Na2CO3 + 10H2O → 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.
Name the metal whose carbonate is known as washing soda.
Fill in the following blank:
Chemical formula of washing soda is ..................
What is washing soda?
State two uses each of the following compounds:
Hydrogen
State whether an aqueous solution of washing soda is acidic or alkaline? Give reason for your answer.
How many molecules of water of crystallisation (per formula unit) are present in:
washing soda?
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?
Chemical formula of washing soda is ____________.
