In this PLE we are going to continue our investigate acids and bases. (NOTE: If you can not answer a question below enter CNA.)

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Give me some responses to the questions below and I'll give you some extra credit.


Laboratory Section:

1. H2S(aq) is a diprotic acid. Give a 0.100 M H2S solution, complete the ICE table below. (Hint)





2. Ka1 for H2S is 5.7 x 10-8. Calculate [H+] produced from H2S.

3. What is the [HS-] (at equilibrium) in the solution?

4. Complete the table below for the second dissociation HS-.


(Hint) Initial



5. Ka2 for H2S is 1.3 x 10-13. Calculate [H+] produced from Question 4.

6. What is the [H+] in a 0.100 M H2S solution?

7. Is there anything about the questions that you feel you do not understand? List your concerns/questions.