Concept explainers
A buffer is 0.100 M in NH4CI and 0.100 M in NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer component neutralizes the added acid?
- Cl−
- NH3
- NH4+
- none of the above (Hydrobromc acid will not be neutralized by this buffer.)
Interpretation:
Buffer components which neutralizes the added acid should be determined.
Concept introduction:
A buffer solution contains a weak acid/base mixed with its conjugate base/acid and resists the change in pH.
Answer to Problem 1SAQ
Correct answer:
Option (b) is a correct answer.
Explanation of Solution
Reasons for the correct option: The given buffer is 0.100 M NH4Cl and 0.100 M in NH3. When small amount of hydrobromic acid,
Reasons for the incorrect options: Option (a) is given as
Option (c) is given as
Option (d) is given as none of the above. So, this is a wrong option.
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