question_answer

The moles of \[NaOH\]can be added to \[1.0\text{ }L\]of solution of \[0.1\text{ }M\]\[N{{H}_{3}}\] and \[0.1\text{ }M\]\[N{{H}_{4}}Cl\] without changing \[pOH\]by more than one unit (\[p{{K}_{a}}\] of \[N{{H}_{3}}=4.75\]) is ______.

Answer:

0.082