
LARUTAN PENYANGGA
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Chemistry
•
11th Grade
•
Hard
eka kartika
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LARUTAN PENYANGGA
By eka kartika
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CONTOH SOAL
BERAPA pH LARUTAN JIKA 200 mL NH4OH 0,5 M DITAMBAH DENGAN 100 mL HCl 0,2 M? (Kb = NH4OH = 1,8 X 10-6)
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LARUTAN PENYANGGGA DISEBUT LARUTAN BUFER/ PENAHAN/DAPAR ADALAH LARUTAN YANG DAPAT MEMPERTAHANKAN HARGA pH MAKSUDNYA JIKA LARUTAN BUFER KETAMBAHAN SEDIKIT ASAM, SEDIKIT BASA ATAU PENGENCERAN MAKA pH LARUTAN TERSEBUT TIDAK BANYAK BERUBAH
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BASA LEMAH DAN GARAMNYA
BUFER BASA
ASAM LEMAH DAN GARAMNYA
BUFER ASAM
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ADA 2 JENIS LARUTAN BUFER
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CONTOH BUFER ASAM
A. CH3COOH + CH3COONa ATAU CH3COOH + CH3COO-
B. NaH2PO4 + Na2HPO4 ATAU H2PO4- + HPO42-
C. H2CO3 + NaHCO3 ATAU H2CO3 + HCO3-
Subject | Subject
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A. NH4OH dan NH4Cl ATAU NH3 dan NH4+
B.C6H5NH2 dan C6H5NH3Cl ATAU C6H5NH2 dan C6H5NH3+
C. N2H4 dan N2H5Cl ATAU N2H4 dan N2H5+
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CONTOH BUFER BASA
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RUMUS BUFER ASAM
[H+] = Ka (mol)asam
(mol)garam
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RUMUS BUFER BASA
[OH-] = (mol) basa
(mol) garam
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CONTOH LARUTAN BUFER DALAM KEHIDUPAN SEHARI HARI
PENYANGGA HEMOGLOBIN
PENYANGGA KARBONAT
PENYANGGA POSPAT
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LARUTAN PENYANGGA
By eka kartika
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