find PH value when concentration of Hydroxide ion is 0.01M
Answers
Answer:
Explanation:
The pH of a given solution is nothing more than the negative log base
10
of the concentration of hydrogen ions,
H
+
, which you'll sometimes see written as
H
3
O
+
, the hydronium ion.
You thus have
pH
=
−
log
(
[
H
+
]
)
−−−−−−−−−−−−−−−−−
In your case, the problem provides you with the concentration of hydrogen ions
[
H
+
]
=
0.01 M
This means that the pH of the solution will be
pH
=
−
log
(
0.01
)
pH
=
−
log
(
10
−
2
)
=
−
(
−
2
)
⋅
log
(
10
)
Since you know that
log
10
(
10
)
=
log
(
10
)
=
1
you can say that
pH
=
−
(
−
2
)
⋅
1
=
2
−−−−−−−−−−−−−−−−−−−−
Because the pH is
<
7
, this solution will be acidic.
Explanation:
Answer:
pOH is defined as negative logarithm to base 10 of hydroxyl ion concentration ([OH-]) expressed in moles/litre. p stands for power and OH for hydroxyl ion concentration.
pOH = –log10 [OH-]
or
pOH = log10 1/[OH-]
when, [OH-] = 0.01 M = 10-2 M
pOH = –log10 [10-2]
pOH = 2
Since,
pOH + pH = 14
pH = 14 – pOH
pH = 14 – 2
pH = 12
Explanation: