ENVIRONMENTAL ENGINEERING ANALYSIS Fall 1996

Homework Set # 3 Out: September 26 Due: October 3

1. Calculate both [H3O+] and [OH-] in a 0.400 F HCl solution at 25oC

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2. Classify the following salts as acidic, basic, or neutral. Explain your reasoning. (a) (NH4)2CO3, (b) KClO4, © KHSO4, (d) BaO, (e) NaHSO3, and (f) CH3NH3NO3.

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3. Calculate the equilibrium pH of a 0.1M nitrous acid, HNO₂, solution at 25^oC

(pK_a = 3.29)