1. Explain how buffers resist changes in pH ufe resist y usng the t to neu tre i
ID: 1030020 • Letter: 1
Question
1. Explain how buffers resist changes in pH ufe resist y usng the t to neu tre ina o ions and A to ne tyaize H ion- 2. What is the best way to increase the capacity of a buffer made by dissolving NalHCO, in an aqueous solution of HCO H? Describe how you would pick the appropriate chemicals to use to prepare a buffer ou would nnd a, butter that maintains the 3. soluton a spesifiGH at 1o hele detamine 'the han durson- Haccsbealin.Chouse ctm jugatew 4 For a buffer prepared from acetic acid and sodium acetate dissolved in water thit dncribes what happens when a small amount of acid is addedExplanation / Answer
2. Buffer has more capacity when pH=pKa.
pH = pKa + log [[NaHCO2]/[H2CO2]]
If the concentration of acid is equal to concentration of conjugate base then pH = pKa and buffer will have greater capacity.
If we add some amount of solid NaHCO2 which is having same number of moles of aqueous solution of acid, we will get the buffer with more capacity.
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