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How many moles of sodium hydroxide can b...

How many moles of sodium hydroxide can be added to 1.00 L of a solution 0.1 M in `NH_3` & 0.1 M in `NH_4C`l without changing the pOH by mor than 1.00 unit ? Assume no change in volume. `Kb(NH_3)= 1.8 xx 10^(-5))`.

A

0.0818 moles

B

0.0516 moles

C

0.0718 moles

D

0.0926 moles

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The correct Answer is:
A
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