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Chapter 9: Q29P (page 209)
Why is the pH of a buffer nearly independent of concentration?
When volume of the buffer changes while adding up some liquid, the ratio of /does not change because the added liquid affects both the same (cause an increase or decrease in both
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Why does buffer capacity increase as the concentration of buffer increases?
Find the pH if only 6.30 instead of 12.0 mL HCl were added
Why does the buffer capacity reach a maximum when ?
When is a weak acid weak and when is a weak acid strong? Show that the weak acid dissociatedrole="math" localid="1654854665468" will be 92%dissociated when dissolved in water if the formal concentration is one-tenth of Show that the fraction of dissociation is 27%when. At what formal concentration will the acid be 99%dissociatedCompare your answer with the left -hand curve in Figure 9-2
Use the Goal Seek spreadsheet at the end of the chapter to find the pH of 1.00 L of solution containing 0.030 molHAand What would the be with the approximations [HA]=0.030 and =0.015?
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