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NCERT Class XII Chemistry
Chapter - The p-Block Elements
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Question : 65
Total: 74
Why is Ka2<<Ka1 for H2SO4 in water?
Solution:  
H2SO4 is a very strong acid in water largely because of its firstionisation to H3O+and HSO4–. The ionisation of HSO4– to H3O+ and SO42– is very very small. That is why, Ka2<<Ka1
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