1a) Calculate the concentration of HS- in an aqueous solution of 0.0918 M hydrosulfuric acid, H2S (aq). [HS-] = M. 1b) The pH of an aqueous solution of 0.0455 M ascorbic acid, H2C6H6O6 (aq), is . 1c) Calculate the concentration of C6H6O62- in an aqueous solution of 8.41Ã10-2 M ascorbic acid, H2C6H6O6 (aq). [C6H6O62-] = M.

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13 Dec 2019

1a) Calculate the concentration of HS^- in an aqueous solution of 0.0918 M hydrosulfuric acid, H₂S (aq).

[HS^-] = M.

1b) The pH of an aqueous solution of 0.0455 M ascorbic acid, H₂C₆H₆O₆ (aq), is .

1c) Calculate the concentration of C₆H₆O₆^2- in an aqueous solution of 8.41Ã10^-2 M ascorbic acid, H₂C₆H₆O₆ (aq).

[C₆H₆O₆^2-] = M.

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Calculate the approximate pH of an aqueous solution of H₂S , 0.17 M, and H₃PO₄, 0.33 M at 25Â°C. (Note: consider one decimal place for the pH answer.)

pKa H₂S/HS^- = 7.02, pKa HS^-/S^2- = 13.99

pKaH₃PO₄/ H₂PO₄^- =2.15, pKaH₂PO₄^-/HPO₄^2-=7.15, pKa HPO₄^2-/ PO₄^3- =12.38

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