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pH adjustment help?

notturno_49
in Applied Chemistry

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So I have a question. What is the [s -2] in a saturated solution 9.10 M0 of H2S, in which the pH has been adjusted to 5.00 by the addition of HCl? For H2S, Ka1= 1.1 x 10-7 and Ka2 = 1.0 x -14.

It's hard to follow and I don't think that the question is clear enough.

 

I'm not a chemistry guy, but I will help anywhere I can about chemistry, but in this case what I see aboveis a mess, really. Please try to use the [ce] for chemical equations and LaTeX for ionic states, so you can make your questions clearer. Then at least you might get some help from anyone who's good at what you need.

 

But isn't this for the HW section anyway?

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