Question

100 mL of 1 N NH₄OH (K_b = 5 x 10^–5) is neutralized to equivalence point by 1 N HCl. The pH of solution at equivalence point is:

(a) 2.0 

(b) 2.5

(c) 3.0 

(d) 5.0

Answer 1

Correct option: (d) 5.0

Explanation: 

Meq. of NH₄OH = Meq. of HCl

= Meq. of NH₄Cl formed