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JEE Advanced 2006
Exam
JEE Advanced
Year
2006
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

JEE Advanced 2006 · Chemistry · p Block Elements (Group 13 & 14)

The species present in solution when CO_2 is dissolved in water are

The species present in solution when CO2\mathrm{CO}_2 is dissolved in water areThe species present in solution when CO_2 is dissolved in water are

Options

  1. ACO2,H2CO3,HCO3−,CO32−\mathrm{CO}_2, \mathrm{H}_2 \mathrm{CO}_3, \mathrm{HCO}_3^{-}, \mathrm{CO}_3^{2-}
  2. BH2CO3,CO32−\mathrm{H}_2 \mathrm{CO}_3, \mathrm{CO}_3^{2-}
  3. CCO32−,HCO3−\mathrm{CO}_3^{2-}, \mathrm{HCO}_3^{-}
  4. DCO2,H2CO3\mathrm{CO}_2, \mathrm{H}_2 \mathrm{CO}_3

Correct answer

A. CO2,H2CO3,HCO3−,CO32−\mathrm{CO}_2, \mathrm{H}_2 \mathrm{CO}_3, \mathrm{HCO}_3^{-}, \mathrm{CO}_3^{2-}

Step-by-step solution

When CO2\mathrm{CO}_2 is dissolved in water, therefore it forms dibasic carbonic acid, which gives HCO3−\mathrm{HCO}_3^{-} and CO32−\mathrm{CO}_3^{2-} ions on ionisation. Hence in solution CO2,H2CO3,HCO3−\mathrm{CO}_2, \mathrm{H}_2 \mathrm{CO}_3, \mathrm{HCO}_3^{-}and CO32−\mathrm{CO}_3^{2-} are present. The species present in solution when CO_2 is dissolved in water are
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