When PH of solution drops from 3.0 to 1.0 , the hydrogen ion concentration increased by a factor of one hundred fold from. 0010.what is the concentration at PH = 1.0 ?
Answers
Answer:
HOPE THIS HELPS.
Explanation:
By definition,
p
H
,
pouvoir hydrogene
≡
−
log
10
[
H
3
O
+
]
.
1
p
H
unit therefore represents a 10-fold increase or decrease in hydrogen ion concentration.
Students tend to have problems with the logarithmic function, because it is here where they are introduced to the function for the first time. All I can say is do not be intimidated by it. Back in the day, before the advent of electronic calculators, everyone used logs for complex calculation. When I write
log
a
b
=
c
, I ask to what power I raise the base
a
to get
c
. Here,
a
c
=
b
. And thus
log
10
10
=
1
,
,
log
10
100
=
2
,
log
10
10
−
1
=
−
1
. And
log
10
1
=
0
.
p
H
and
p
O
H
exploit this logarithmic function, utilizing the autoprotolysis of water:
2
H
2
O
⇌
H
3
O
+
+
H
O
−
, where
p
K
a
=
10
−
14
.
And thus if
p
H
=
2
,
[
H
3
O
+
]
=
10
−
2
⋅
m
o
l
⋅
L
−
1
=
?
?
And if
p
H
=
3
,
[
H
3
O
+
]
=
10
−
3
⋅
m
o
l
⋅
L
−
1
=
?
?
; thus here hydrogen ion concentration is TENFOLD decreased compared to former concentratio