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Ka1 , Ka2 and Ka3 are the respective ionisation constants for the following reactions.

H2S →   H+ + HS

HS–  → H+ + S2

 H2S → 2H+ + S2

The correct relationship between is Ka1 , Ka2 and Ka3

  1. Ka3= Ka1 × Ka2
  2. Ka3= Ka1 + Ka2
  3. Ka3= Ka1 – Ka2
  4. Ka3= Ka1 / Ka2

0 4 Views | Posted 3 months ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    3 months ago

    This is a Multiple Choice Questions as classified in NCERT Exemplar

    Ans: Option(i)  

    H2S?H+ +HS− Ka1

    HS−?H++S2− Ka2

    H2S?2H++S2− Ka3

    Ka1= [ H S - ] [ H + ] [ H 2 S ]

    Ka2= [ H S - ] [ H + ] [ H 2 S ]

    Ka3=Ka1.Ka2

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