Answer:
1) A. "Yes, it will result in a buffer solution."
2) A. "Yes, it will result in a buffer solution."
3) A. "No, it will not result in a buffer solution."
4) B. No, it will not result in a buffer solution."
5) B. No, it will not result in a buffer solution.
Explanation:
A buffer system is formed by two components:
- A weak acid and its conjugate base.
- A weak base and its conjugate acid.
<em>1) Mixing 100.0 mL of 0.1 M HF with 100.0 mL of 0.05 M mol KF. </em>A. "Yes, it will result in a buffer solution."
HF is a weak acid and F⁻ is its conjugate base.
<em>2) Mixing 100.0 mL of 0.1 M NH₃ with 100.0 mL of 0.1 M NH₄Br.</em> A. "Yes, it will result in a buffer solution."
NH₃ is a weak base and NH₄⁺ is its conjugate acid.
<em>3) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.05 M KOH.</em> A. "No, it will not result in a buffer solution."
It does not have the components of a buffer system.
<em>4) Mixing 100.0 mL of 0.1 M HCl with 100.0 mL of 0.1 M KCl.</em> B. No, it will not result in a buffer solution."
It does not have the components of a buffer system (HCl is a strong acid).
<em>5) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.1 M KOH.</em> B. No, it will not result in a buffer solution.
It does not have the components of a buffer system.
