Question: 20 mL of 0.1 M H 2 SO 4 solution is added to 30 mL of 0.2 M NH 4 OH solution. The pH of

20 mL of 0.1 M H2SO4 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) 9.0

(c) 5.0

(d) 5.2

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