Abuffer can be prepared by mixing two solutions. determine if each of the following mixtures will result in a buffer solution or not.1) mixing 100.0 ml of 0.1 m hf with 100.0 ml of 0.05 m mol kf [ select ] ["yes, it will result in a buffer solution.", "no, it will not result in a buffer solution."] 2) mixing 100.0 ml of 0.1 m nh3 with 100.0 ml of 0.1 m nh4br [ select ] ["yes, it will result in a buffer solution.", "no, it will not result in a buffer solution."] 3) mixing 100.0 ml of 0.1 m hcn with 100.0 ml of 0.05 m koh [ select ] ["no, it will not result in a buffer solution.", "yes, it will result in a buffer solution."] 4) mixing 100.0 ml of 0.1 m hcl with 100.0 ml of 0.1 m kcl [ select ] ["yes, it will result in a buffer solution.", "no, it will not result in a buffer solution."] 5) mixing 100.0 ml of 0.1 m hcn with 100.0 ml of 0.1 m koh [ select ] ["yes, it will result in a buffer solution.", "no, it will not result in a buffer solution."]

The answers are in the explanation

Explanation:

A buffer is the mixture of a weak acid with its conjugate base or vice versa. Thus:

1) Mixing 100.0 mL of 0.1 M HF with 100.0 mL of 0.05 M mol KF. Will result in a buffer because HF is a weak acid and KF is its conjugate base.

2) Mixing 100.0 mL of 0.1 M NH₃ with 100.0 mL of 0.1 M NH₄Br. Will not result in a buffer because NH₃ is a strong base.

3) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.05 M KOH. Will result in a buffer because HCN is a weak acid and its reaction with KOH will produce CN⁻ that is its conjugate base.

4) Mixing 100.0 mL of 0.1 M HCl with 100.0 mL of 0.1 M KCl Will not result in a buffer because HCl is a strong acid.

5) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.1 M KOH Will not result in a buffer because each HCN will react with KOH producing CN⁻, that means that you will have just CN⁻ (Conjugate base) without HCN (Weak acid).

I hope it helps!

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).