Hasil Pengamatan Kapasitas Dapar
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Transcript of Hasil Pengamatan Kapasitas Dapar
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8/17/2019 Hasil Pengamatan Kapasitas Dapar
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Hasil Pengamatan Kapasitas Dapar
No
.
Asam Lemah Garam pH β Nama Berat (g) Nama Berat (g)
1 KH2PO4 !141" Na2HPO4 !#14 $!$ !1
2 KH2PO4 !14# Na2HPO4 !# $!% !1
& KH2PO4 .14$ Na2HPO4 !#1& $!# !1
.
Perhit'ngan
1) Konsentrasi otal
β 2!&& *
Ka [ H3O+ ]
(Ka+ [H3 O+
] )2
!1 2!&& *(6,2×10
-8) (10
-7)
(0,62×10-7
+10-7
)2
!1 2!&& *6,2×10
-15
(1,62×10-7
)2
!1 2!&& *6,2×10
-15
26,2×10-15
!1 2!&& * (!24)!1 !++ *
* 0,01
0,55
* !1%2) Konsentrasi Asam
,asam- ,garam- *.
,asam- ,garam- !1%
,garam- !1%/,asam-
pH pKa log
[garam]
[asam]
$ $!21 log[garam]
[asam]
/!21 log[garam]
[asam]
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Antilog (/!21) [garam]
[asam]
!"2 [garam]
[asam]
,garam- !"2 ,asam-,garam- !1%/,asam-
!"2 ,asam- !1%/,asam-
!"2 ,asam-,asam- !1%
1!"2 ,asam- !1%
,asam- 0,018
1,62
,asam- !1 0&) Konsentrasi Garam
,garam- !"2 ,asam-
,garam- !"2(!1 0),garam- !"2 0
4) 0assa Asam
0 asam Massa
BM×
1000
V
!1 0 x
136×
1000
100 mL
0,01 M × 136
10
!1&" gram !14 gram
+) 0assa Garam
0 garam Massa
BM×
1000
V
!"2 0x
142×
1000
100 mL
0,0062 M × 14210
!%% gram !# gram
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Hasil Pengamatan onisitas
Nama Bahan Berat 3 ol'me pH 5e6iaan7aniti6in H*l 2$!# mg3mL "!$/$!"
Na2HPO4 anhi6rat !#% mg3mL "!$/$!"
KH2PO4 1!+ mg3mL "!$/$!"
Perhit'ngan
73 7aniti6in H*l 2$!# mg
Na2HPO4 anhi6rat !#% mg
KH2PO4 1!+ mg.
A8'a pro in9e:tion a6 1 mL
A. Perhit'ngan Liso
Ls! "a#a$ ;
% &a'
L
BM "a#a$
Ls! &a' ;
% "a#a$
L
BM &a'
1)Ls! 7aniti6in H*l
Ls! ;
1
1L
350,84 3,4 ×
0,16
1L
58,45
Ls!× !2% !#&
Ls! &!&2
2)Ls! &a2 HO4 anhi6rat
Ls! ; 1
1L
141,*8 3,4 ×
0,44
1L
58,45
Ls! !$4 !2+"
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Ls! &!"&
&) Ls! KH2O4
Ls! ; 1
1L
136,13 3,4 ×
0,48
1L
58,45
Ls! !$& !2$#
Ls! &!%
B. 0eto6e Krios
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=Ls!B%ra. × 1000
BM × V
=¿ &!% ;0,0015 g × 1000
136,13 × 1000 mL
=¿ !42o*
0aa6i! 9'mlah Na*l ?ang 6itam@ah
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2)&a2 HO4 anhi6rat
1000 mg &a2 HO4 0/*8 mg
440 mg &a'(x
.4& mg
&)KH2O4
1000 mg KH2 O4
1/5 mg 480 mg &a'
x
.$2 mgΣ 4.4" mg .4&1 mg .$2 mg
Σ +."1 mg
Σ +."1 ×10-3
g
Na*l .#= 0/* g
100 m x
1 m
.# g
Na*l ?ang 6itim@ang .+"1 g .# g
.1% g