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KCET2022Chemistryp Block Elements (Group 13 & 14)

Which property of CO ₂ makes it biologically and geo-chemically important ?

Options

  1. AIts colourless and odourless nature
  2. BIts low solubility in water
  3. CIts high compressibility
  4. DIts acidic nature

Correct answer

B. Its low solubility in water

Step-by-step solution

The property of low solubility of carbon dioxide in water makes it biologically and geo-chemically important. Carbon dioxide on reaction with water form carbonic acid, which dissociates to give HCO ₃⁻ ions. H ₂ CO ₃ / HCO ₃⁻ buffer system helps to maintain pH of blood between 7.26-7.42 .

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