General Questions
These questions are not explicitly keyed to chapter topics; many require integration of several concepts.
A buffer solution was prepared by adding 4.95 g sodium acetate to 250. mL of 0.150-M acetic acid.
(a) What ions and molecules are present in the solution? List them in order of decreasing concentration.
(b) Calculate the pH of the buffer solution.
(c) Calculate the pH of 100. mL of the buffer solution if you add 80. mg NaOH. (Assume negligible change in volume.)
(d) Write a net ionic equation for the reaction that occurs to change the pH.
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