MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryIonic equilibriumTheory of Acids and Bases
Pure water is kept in a vessel and it remains exposed to atmospheric CO2 which is absorbed, then its pH will be
A.Greater than 7
B.Less than 7✓ Correct
C.7
D.Depends on ionic product of water
Explanation
Less than 7. Atmospheric 2 CO will dissolve in water and form 2 3 H CO (Carbonic acid) which will make the pH of solution drop below 7.
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