S2- concentration in a saturated solution (0.10 M) of H2S

S2- concentration in a saturated solution (0.10 M) of H2S

 

 

What is the S2- concentration in a saturated solution (0.10 M) of H2S, in which the pH has been adjusted to 6.00 by the addition of HCl? For H2S, Ka1 = 1.1 × 10-7 and Ka2 = 1.0 × 10-14.

 

A) 1.1 × 10-16 M

B) 1.1 × 10-10 M

C) 1.0 × 10-2 M

D) 3.2 × 10-8 M

 

 

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The answer is B) 1.1 × 10-10 M.

 

 

Combine the two dissociations

 

 

 

 

 

 

 

S2- concentration in a saturated solution of H2S.hwp

  

  

  

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