1. Tardigrade
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  3. Chemistry
  4. Calculate the pOH -p K b for the buffer, 0.20 M NH 3, 0.40 M NH 4 Cl , K b for ammonia =10

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Q. Calculate the $pOH -p K_{ b }$ for the buffer, $0.20 \,M \,NH _{3}$, $0.40 \,M \,NH _{4} \,Cl , K_{ b }$ for ammonia $=10$

Equilibrium

Solution:

$pOH =p K_{ b }+\log \frac{[\text { Salt }]}{[\text { Base }]}$
$pOH -p K_{ b }=\log \frac{0.4}{0.2}=0.30$