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The first and second dissociation constants of an acid H2A are 1.0 x 10-5 & 5.0 x 10-10 respectively. The overall dissociation constant of the acid will be -
[AIEEE-2007]
  • a)
    5.0 x 10-5
  • b)
    5.0 x 1015
  • c)
    5.0 x 10-15
  • d)
    0.2 x 105
Correct answer is option 'C'. Can you explain this answer?
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The first and second dissociation constants of an acid H2A are 1.0 x 1...

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The first and second dissociation constants of an acid H2A are 1.0 x 1...
The first dissociation constant (Ka1) of the acid H2A is 1.0 x 10^-5.

The second dissociation constant (Ka2) of the acid H2A would depend on whether H2A can dissociate further into another ion. If H2A can further dissociate, then the second dissociation constant would be different from the first dissociation constant. However, you did not provide the value of the second dissociation constant.
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The first and second dissociation constants of an acid H2A are 1.0 x 10-5 & 5.0 x 10-10 respectively. The overall dissociation constant of the acid will be -[AIEEE-2007] a)5.0 x 10-5b)5.0 x 1015c)5.0 x 10-15d)0.2 x 105Correct answer is option 'C'. Can you explain this answer?
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