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Unformatted text preview: pH ? pH = ______________ 2. Buffers. A buffer is a mixture of a WA and a WB (usually a CA/CB pair), both in appreciable concentration (greater than 0.01 M). (a) There is a shortcut formula for buffers: HA + H 2 O H 3 O + + A-(b) In general, for any buffer, if [CA] = [CB], then pH = _________. If 10 ] CB [ ] CA [ 0.1, then pH = ____________ (c) Sample Buffer Problem: A solution has [HAc] = 0.25 M and [Na + ] = [Ac-] = 0.10 M. What is the pH of this solution? pH = ______________ 3. Graphing [H 3 O + ] and pH for a Titration of a Strong Acid (H 3 O + , in the beaker) with a Strong Base (OH-, in the buret)....
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