Answer:
c.) HNO₃ & NaNO₃
Explanation:
A buffer system has 2 components:
Which one of the following combinations cannot function as a buffer solution?
a.) HCN & KCN. YES. HCN is a weak acid and CN⁻ (coming from KCN) its conjugate base.
b.) NH₃ & (NH₄)₂SO₄. YES. NH₃ is a weak base and NH₄⁺ (coming from (NH₄)₂SO₄) its conjugate acid.
c.) HNO₃ & NaNO₃. NO. HNO₃ is a strong acid.
d.) HF & NaF. YES. HF is a weak acid and F⁻ (coming from NaF) its conjugate base.
e.) HNO₂ & NaNO₂. YES. HNO₂ is a weak acid and NO₂⁻ (coming from NaNO₂) its conjugate base.
The combination that cannot work as a buffer solution is:
c.) HNO₃ & NaNO₃
A buffer system has 2 components:
A weak acid and its conjugate base and a weak base and its conjugate acid
So out of the given options we have to look at a weak acid and its conjugate base for a buffer solution.
The correct choice for combination that will not work as buffer solution will be:
c.) HNO₃ & NaNO₃. Since, HNO₃ is a strong acid.
Find more information about Buffer solution here:
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