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Chemistry
Chemistry
Problem
pH of mixture having 0.1 M
NH
4
OH
\text{NH}_4\text{OH}
NH
4
OH
and 0.1 M
NH
4
Cl
\text{NH}_4\text{Cl}
NH
4
Cl
is equal to
p
K
w
−
p
K
b
\text{p}K_w - \text{p}K_b
p
K
w
−
p
K
b
. If 0.1 M
NH
4
OH
\text{NH}_4\text{OH}
NH
4
OH
and 0.1 M
(
NH
4
)
2
SO
4
(\text{NH}_4)_2\text{SO}_4
(
NH
4
)
2
SO
4
are taken, the pH will be : a.
p
K
w
−
p
K
b
\text{p}K_w - \text{p}K_b
p
K
w
−
p
K
b
b.
p
K
w
+
p
K
b
\text{p}K_w + \text{p}K_b
p
K
w
+
p
K
b
c.
p
K
w
−
p
K
b
+
log
2
\text{p}K_w - \text{p}K_b + \log 2
p
K
w
−
p
K
b
+
lo
g
2
d.
p
K
w
−
p
K
b
−
log
2
\text{p}K_w - \text{p}K_b - \log 2
p
K
w
−
p
K
b
−
lo
g
2
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