Scenes A to D represent tiny portions of 0.10 M aqueous
Chapter 20, Problem 99P(choose chapter or problem)
Scenes A to D represent tiny portions of \(0.10 \mathrm{M}\) aqueous solutions of a weak acid HA (red and blue; \(K_{\mathrm{a}}=4.5 \times 10^{-5}\) ), its conjugate base \(\mathrm{A}^{-}\)(red), or a mixture of the two (only these species are shown):
(a) Which scene(s) show(s) a buffer?
(b) What is the \(\mathrm{pH}\) of each solution?
(c) Arrange the scenes in sequence, assuming that they represent stages in a weak acid-strong base titration.
(d) Which scene represents the titration at its equivalence point?
Equation Transcription:
Text Transcription:
0.10M
K_a=4.5 x10^−5
A^-
pH
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