Question

Explain why each of following aqueous mixtures could or could not produce a buffer. In each case where the solution is a buffer, name the common ion and calculate the pH. (Use the Ka and Kb values)

a) 100 mL solution containing 0.20 M NH4Cl and 0.20 M NH3

b) 100 mL solution containing 0.20 M KOH and H2O

c) 100 mL solution containing 0.10 M H2SO3 and 0.15 M NaHSO

Answer 1

Answer :-

To be a buffer solution, it should have weak acid or base and its sal with strong base or acid. So a and c will give buffer solution while b will not give the buffer.

The answer is given in the image,