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Chemistry
Chemistry
Problem
p
K
b
\text{p}K_b
p
K
b
of
NH
4
OH
\text{NH}_4\text{OH}
NH
4
OH
is 5. The pH of a mixture containing 10 mL of 0.3 M
NH
4
OH
\text{NH}_4\text{OH}
NH
4
OH
and 200 mL of 0.1 M
(
NH
4
)
3
PO
4
(\text{NH}_4)_3\text{PO}_4
(
NH
4
)
3
PO
4
is : a. 5 b. 5.3010 c. 6.3010 d. 7.6987
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