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  • Salt ‘P’, commonly used in bakery products, on heating gets converted into another salt ‘Q’ which itself is used for the removal of hardness of water and a gas ‘R’ is evolved. The gas ‘R’ when passed thro

Salt ‘P’, commonly used in bakery products, on heating gets converted into another salt ‘Q’ which itself is used for the removal of hardness of water and a gas ‘R’ is evolved. The gas ‘R’ when passed through freshly prepared lime water turns milky. Identify ‘P’, ‘Q’ and ‘R’, giving chemical equation for the justification of your answer.

 

 

 

 
 
 
 
 

Answers (1)

Baking power which is a salt is used as bakery products which give sodium carbonate and carbon dioxide gas on heating. Sodium carbonate is used to remove the hardness of water. Carbon dioxide turns lime water milky.
NaHCO3? (Sodium bicarbonate) → Na2CO3? (Sodium carbonate) + CO2? (carbon dioxide) + H2?O 

 

Therefore,

  • Salt P, which is sodium bicarbonate and used as baking powder.
  • Salt Q is sodium carbonate, which is used to remove the hardness of water.
  • R is carbon dioxide gas which turns lime water milky.
Posted by

Satyajeet Kumar

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