EQUALIBRIUM - Common Ion Effect and Buffers
8 important questions on EQUALIBRIUM - Common Ion Effect and Buffers
What will give the optimum buffer?
How do you solve a buffer solution?
- List all relevant reactions and their K values. Make sure it is the acid/base and its conjugate
- Make the ice table
- Substitute into the K expression
What do acidic buffers typically look like?
- Weak Acid and its conjugate base
- HA + H2O <-> H30+ + A-
- acidic buffer will have pH<7
2. Weak base and its conjugate acid
- B + H2O <-> OH- + HA+
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How do you calculate the pH for a buffered solution?
What is a buffer capacity?
What is the maximum concentration of both species?
What is a buffer range?
Range = pKa +- 1
What is the pH of a solution made up of 0.53M NH3 and 0.73M NH4Cl?
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