20 mL of 0.1 MH2SO4 solution is added to 30 mL of 0.2 M NH4OH solution. The pH of the resultant mixture is: [pKb of NH4OH = 4.7].

20 mL of 0.1 MH2SO4 solution is added to 30 mL of 0.2 M NH4OH solution

1.	20 mL of 0.1 MH2SO4 solution is added to 30 mL of 0.2 M NH4OH solution. The pH of the resultant mixture is: [pKb of NH4OH = 4.7].
A.	9.4
B.	5.0
C.	9.0
D.	5.2
Answer» B. 5.0