1. Calculate the pH value of a solution having a concentration of H+(hydrogen ion) of 5.35E-09 M at 25°C ? (Include 2 decimal points).
2. The pKa of the ammonium ion is 9.25. NH3/NH4+ is a good buffer:a. Between pH 10.25 and 11.25. b. Between pH 7.25 and 8.25. c. At pH values less than 7.0. d. At pH 4.63. e. Between pH 8.25 and 10.25.
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