Page 41 - E-MODUL LARUTAN ELEKTROLIT DAN NONELEKTROLIT(2)

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E-Modul Larutan Elektrolit dan Non Elektrolittt
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l
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ekt
L
L
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ekt
Dis
ea
erba
is
L
co
Berbasis Guided Discovery Learningningning
ver
r
ed
B
Guid
B erba s is Guid ed Dis co ver y L ea r
y
s
-
as

er
-
er
m
ip

m

as

d
d
m
m
iatas
as
iatas
o
g
g
m
o
leh
leh
in
m
in
er
d
d
ajat
ajat
er
i

g
i
ak
ak
as
as
is
Dari data diatas maka diperoleh masing-masing derajat ionisasiii
Dar
Dar
is
a
io
io
a
n
n
g
ip
as
d
ata
d
in
d
d
ata
in

t

b
u
u
u
ik
b

u
lar
larutan adalah sebagai berikut :::
er
lar
a
a
ad
ad
s
ai
ai
s
er
t
eb
eb
g
alah
tan
g
tan
alah
ik

α
Na

α

Na
=
C
OO
OO
=
C
C
H
C
a.a.a. CH3COONa α === = 111
H33
α
H

H
0

α

=
= 0,555

b.b.b. CH COOH α === = 0 , ,
C
H
C
C
C
O
O
O
H
O
333
= 000
c
c
c... C O ( NH 2 222 α =
=
α = = =
α
NH
O
CO(NH )))
(
C
2
2
h
o
a
o
Co
s
Co nt o h s o a
nt
Contoh soal:l:l:
d
ala
m
1
as
(
H
C
tan
t
u
u
C
s
m
as
a
h
ter
Pada suhu tertentu, dalam 1 liter larutan asam asetat (CH COOH)))
Pad a s u h u ter ten tu , , d ala m 1 lite r l l ar u tan as a m as eta t ( C H 333 C OOH
a
Pad
lite
tu
r
ten
OOH
u
eta
ar
m
C
o
m

o

n
n
H
H

l
l
io
io

d
d
ter
OOH
ap
ap
ter
a
d
d
n
n
a
OOH
0
0
C
1
1
0
0
0
at
at
,
,
0
y
i
er
1
1
g

i
g
l
an
o
,
an
,
0
l
o
0

is
m
H

yang berisi 0,1 mol CH COOH dan terdapat 0,001 mol ion H OOO +++

y
m
C
C
er
b
is
H
b
333
333
i
lalu
i
zat
C
te
OO
t
H
u
u
H
p
g
C
r
lar
e
as
il
r
aian
m
en
r
ian
ag
d
s
h as il p en g u r aian s eb ag ian d ar i zat te r lar u t C H 333 C OO H m e lalu i r eak s
eak
eb
ar
h
hasil penguraian sebagian dari zat terlarut CH COOH melalui reaksiii
s
eti
es
kesetimbangan berikut ini.i.i.
g
ik
an
k
k es eti m b an g an b er ik u t in
m
b
t
er
an
in
u
b
+
+ H OOO
CH COOHOOHOOH
C H 333 C (aq)aq)aq) + H 222 (l))) C H3 C --- ( ( (aq)aq)aq) + H 333 +++ ( (l)))
C
C
H
+ H OOO
H3
H
+
C
CH3COOOOOO
C
H
l
l
(
(
(
(
l
l
(
ajat
B er ap ak ah d er ajat io n is as i d ar i C H 333 C OOH
er
ah
as
ar
io
H
n
d
is
ap
C
C
B
d
i
i
OOH
ak
Berapakah derajat ionisasi dari CH COOH???
er
P eny eles a ia
ia
Penyelesaian:n:n:
eles
P
a
eny
--- +++
H
H3
+
H
H
+
C
C
H
C
C H 333 C ( ( (aq)aq)aq) + H OOO (l))) C H3 C ( (aq)aq)aq) + H 333 ( ( (l)))
CH COOHOOHOOH
+
C
CH3COOOOOO
+ H OOO
(
222
l
(
l
(
l
l
m
A
A
:
o
0
1
: 0,1 molll
Awalwalwal : 0 , , 1 m o
?..............................................................0,001 molll
1
m
0
0
o
?
er
r
T er u r ::: ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 , , 0 0 1 m o
u
T
Teruraiaiai
0
+++
ju m l l ah m o l C H 333 C OOH y an g ter u r ai = ju m lah m o l l H 333 y an
ju
yanggg
an
y
jumlah mol CH COOH yang terurai = jumlah mol H OOO
m
ah
o
H
m
OOH
=
an
ju
C
y
o
ai
g
r
l
u
C
m
lah
H
ter
m
b
1
b
m
ter
0
0
tu
,
,

0
ter
0
tu
o
1
o
=

k
0

terbentuk = 0,001 molll
m
0
k
en
en
=
o
1
ju
ju m l l ah m o l l C H 333 C OOH a wal = 0 , , 1 m o
C
jumlah mol CH COOH awal = 0,1 molll
m
0
o
m
C
ah
a
wal
m
H
OOH
=
,,,
0
0
,
,
=
0
=
0
=== = 0,0111
,,,
as
is
OOH
C
C
H
0
i,
ad
io
0
d
er
jat
a
ah
J ad i, d er a jat io n is as i i C H 333 C OOH ad al ah 0 , , 0
al
n
ad
Jadi, derajat ionisasi CH COOH adalah 0,0111
J
3
3555
3
A
M
L
S
M
A
X
KE
KELAS X SMA/MAAA
KE L A S X S M A / / M
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