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Questions and Answers
What is the chemical formula for caustic soda?
What is the chemical formula for caustic soda?
- NaOH (correct)
- Naâ‚‚O
- KOâ‚‚
- Na₂CO₃
Which compound is obtained from the Solvay process?
Which compound is obtained from the Solvay process?
- Naâ‚‚Oâ‚‚
- Na₂S₂O₃
- Na₂CO₃ (correct)
- K₂CO₃
What is microsomic salt commonly represented by?
What is microsomic salt commonly represented by?
- Na₂CO₃. NaHCO₃. 2H₂O
- (NHâ‚„) NaHPOâ‚„. 4Hâ‚‚O (correct)
- KOâ‚‚
- Na₂S₂O₃. SH₂O
What chemical reaction is used for soda bleaching?
What chemical reaction is used for soda bleaching?
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Which of the following is an ash derived from potassium?
Which of the following is an ash derived from potassium?
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Study Notes
Compounds of Sodium
- NaOH is also known as Caustic Soda.
- Na₂CO₃ is referred to as Washing Soda, which is produced through the Solvay Process.
- Sodium Peroxide is represented by the formula Naâ‚‚O.
- Soda ash has the chemical formula Na₂CO₃.
Other Compounds
- Potassium ash has the chemical formula K₂CO₃ and is also known as Pearl ash.
- Black ash is composed of Na₂CO₃ and CaS.
- Wood ash is a mixture of K₂CO₃ and K₂SO₄.
Artificial Respiration
- Space capsules used in artificial respiration are made up of KOâ‚‚.
Sodium Compounds
- Sodium thiosulphate has the chemical formula Na₂S₂O₃. SH₂O.
- Sodium sesquicarbonate has the chemical formula Na₂CO₃. NaHCO₃. 2H₂O, and is used for wood washing.
Bleaching
- Soda bleaching involves mixing Naâ‚‚Oâ‚‚ with dilute HCl.
Microscomic Salt
- Microscomic salt has the chemical formula (NHâ‚„) NaHPOâ‚„. 4Hâ‚‚O.
- It gives a bead test and produces a blue color.
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