Problem: Which of the following solutions can act as a buffer?a) KCN/HCN, b) Na2SO4/NaHSO4c) NH3/NH4NO3d) NaI/HI

FREE Expert Solution

We’re being asked to determine which of the given solutions can act as a buffer.

Recall that a buffer can be composed of the following:

weak base and its conjugate acid
weak acid and its conjugate base
weak acid and a strong base 

▪ concentration of weak acid > concentration of strong base

weak base and a strong acid 

concentration of weak base > concentration of strong acid

The maximum buffering capacity of a solution is when the pH of the solution is equal to pKa and the buffer range of a solution is pH = pKa ± 1

 maximum buffering capacity:              pH = pKa

 buffering range:              pH = pKa ± 1

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Problem Details

Which of the following solutions can act as a buffer?

a) KCN/HCN, 

b) Na2SO4/NaHSO4

c) NH3/NH4NO3

d) NaI/HI

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Buffer concept. You can view video lessons to learn Buffer Or if you need more Buffer practice, you can also practice Buffer practice problems .

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Chen's class at UCF.