a
c
i
d
c
i
t
r
i
c
N
a
O
H
1
5
.
s
o
l
u
t
i
o
n
v
o
l
u
m
e
(
m
l
)
n
o
r
m
a
l
i
t
y
1
.
f
a
c
t
o
r
1
.
s
a
m
p
l
e
1
0
0
.
v
o
l
u
m
e
(
m
l
)
a
x
e
s
m
a
x
i
m
a
N
a
O
H
3
0
.
s
o
l
u
t
i
o
n
v
o
l
u
m
e
(
m
l
)
w
e
i
g
h
t
2
0
.
c
o
n
c
e
n
t
r
a
t
i
o
n
(
g
/
L
)
m
o
l
a
r
0
.
2
c
o
n
c
e
n
t
r
a
t
i
o
n
(
m
o
l
/
L
)
c
i
t
r
i
c
a
c
i
d
m
o
l
e
c
u
l
a
r
w
e
i
g
h
t
=
1
9
2
.
1
2
p
r
o
t
i
c
i
t
y
=
3