What does passing of carbon dioxide through slaked lime give?

If CO2  is passed through slaked lime, it gives out calcium carbonate (CaCO3) also called marble/limestone. This is due to the insoluble suspension of calcium carbonate formed. The reaction is:

Ca(OH)2 + CO2 → CaCO3 + H2O

Uses of slaked lime

  • In sewage treatment, one major application of slaked lime is as a flocculant.
  • It has a strong anti-microbial effect
  • Slaked lime is widely used in the food industry
  • It is used in the paper industry.

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