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Question

The species present in solution when CO2 is dissolved in water are

A
CO2,H2CO3,HCO3,CO23
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B
H2CO3,CO23
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C
HCO3,CO23
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D
CO2,H2CO3
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Solution

The correct option is A CO2,H2CO3,HCO3,CO23
When CO2 is dissolved in water, following equilibria are established:
H2O+CO2H2CO3H2CO3H++HCO3HCO3H++CO23
Therefore, in solution, all of the above mentioned species exist.

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