Which of the following is produced when baking powder is heated?

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RRB Group D 19 Sept 2022 Shift 3 Official Paper
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  1. Carbon dioxide and sodium carbonate is produced.
  2. Carbon monoxide and sodium carbonate is produced.
  3. Carbon dioxide and sodium salt of tartaric acid is produced.
  4. Carbon monoxide and sodium salt of tartaric acid is produced.

Answer (Detailed Solution Below)

Option 1 : Carbon dioxide and sodium carbonate is produced.
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Detailed Solution

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The correct answer is "Carbon dioxide and sodium carbonate are produced."

Key Points

  •  When baking powder is heated, CO2  gas is produced.
  •  When baking powder is heated, it evolves carbon dioxide gas which gets converted into sodium carbonate.
  •  The chemical reaction is as followed:
    • ​NaHCO3 -->Na2CO+ CO+ H2O
  • ​  When sodium hydrogen carbonate is dissolved, it slightly gets hydrolyzed.

Additional Information

  • Some common and chemical names of important compounds:
Common Name Chemical Name
Baking powder Sodium Bicarbonate
Bleaching powder Calcium hypochlorite
Washing soda Sodium carbonate

 

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