PERHITUNGAN REAKSI ANT A NTARA ARA NATRIUM TIOSULFAT TIOSULFAT DAN ASAM SULFAT Metode Non Grafk Tabel 1 volume (mL)
volume (mL) H2SO4
Na2S2O3 0." M
ir
!umlah volume
5 5 5
"0 %.5 5
# 2.5 5
"0 "0 "0
waktu (detik)
kekeruha n
4%0 "3"
$$$ $$ $
konsentra si Na2S2O3 (M) 0."000 0.0%50 0.0500
Tabel 2
volume (mL) Na2S2O3 5 5 5
volume (mL) H2SO4 0.5 M "0 %.5 5
ir # 2.5 5
!umlah volume "0 "0 "0
waktu (detik)
kekeruha n
konsentra si H2SO4 (M)
"0" "20 200
$$$ $$ $
0.5000 0.3%50 0.2500
&en''aun'an kedua data diatas N
*H2SO4+
o ". 2. 3. 4. 5. .
0.5000 0.5000 0.5000 0.5000 0.3%50 0.2500
*Na2S2O3
t
+
(sekon
0."000 0.0%50 0.0500 0."000 0."000 0."000
) 4%0 "3" "0" "20 200
r(",t)
0.0204 0.0"43 0.00% 0.00-0.00/3 0.0050
Orde reaksi untuk * Na2 S2 O3 +
"
ln
ln
*H2SO4+
*Na2S2O3+
#0.-3" #0.-3" #0.-3" #0.-3" #0.-/0/ #".3/3
#2.302 #2.5-03 #2.--5% #2.302 #2.302 #2.302
ln r
#3./-"/ #4.24/5 #4./%52 #4."5" #4.%-5/ #5.2-/3
a
b
r 1 k [ H 2 S O4 ] [ Na2 S 2 O3 ] = r 2 k [ H 2 S O4 ]a [ Na2 S 2 O3 ] b
( 0.1000 ) β = 0.0143 ( 0.0750 ) β 0.0204
β
1.43=1.33
β ≈ 1
=
1
Orde reaksi untuk a
[ H 2 S O4 ] b
r 5 k [ H 2 S O4 ] [ Na2 S2 O3 ] = r 6 k [ H 2 S O4 ]a [ Na2 S2 O3 ]b
( 0.3750 )α ( 0.1000 )1 = 0.0050 ( 0.2500 )α ( 0.1000 ) 1 0.0083
1,6=1,5
a≈1
=
a
1
Orde reaksi total 1 $ "$" 2
2
Metode Grafk
Grafk Na2S2O ter!ada" #akt$ "40 "20 "00
() # "40 $ 20.33 6 0.-3
/0 #akt$ '()
0 40 20 0 0.04
0.05
0.0
0.0%
0.0/
0.0-
0."
0.""
%Na2S2O&
Grafk H2SO* ter!ada" #akt$ 250 200 "50
() # 3- $ 2/-."% 6 0./-
#akt$ '() "00 50 0 0.2
0.25
0.3
0.35
0.4
%H2SO*&
3
0.45
0.5
0.55
PERHITUNGAN REAKSI ANTARA MAGNESIUM DAN ASAM KLORIDA
No
7ol. H8l
*H8l+
t 1
(s)
t 2
(s)
t rata−rata
r (",t) (s)
"
25 mL
2N
"0
"4
"2
090/33
2
25 mL
"9/ N
"3
"%
"5
090%
3
25 mL
"9 N
"
20
"/
090555
4
25 mL
"94 N
24
3"
2%95
09033
5
25 mL
"92 N
2/
34
3"
090322
25 mL
"N
5%
"
5-
090"-
%
25 mL
09/ N
%
%%
%2
090"3/
/
25 mL
09 N
"0-
""5
""2
0900/-
( )
r4 [ HCl ] 4 =k r5 [ HCl ]5 0,0363 0,0322
( )
=k
1,4
1, 2
1,1=1,1 k
k =
1,1 1,1
:adi9
=1
k
=
1
( )
[ HCl ]1 r1 = k r2 [ HCl ]2 0,0363 0,0322
=1 .
x
( ) 1,4
x
1,2
x
1,1=( 1,1 )
4
x =1
;arena x Sehin''a9
=
1
9 maka orde reaksin
r = k [ HCl ]
5
%H+l& ter!ada" #akt$ "20 "00 /0 #akt$ '()
0 40 20 0 0.4
0.
0./
"
".2
".4
".
"./
2
2.2
2
2.2
%H+l&
%H+l& ter!ada" la,$ reak(0."000 0.0/00 0.000 la,$ reak(- 0.0400 0.0200 0.0000 0.4 0. 0./
"
".2 ".4 ". "./ %H+l&
