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LARUTAN PENYANGGA

LARUTAN PENYANGGA

Assessment

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Chemistry

11th Grade

Hard

Created by

eka kartika

Used 1+ times

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9 Slides • 0 Questions

1

LARUTAN PENYANGGA

By eka kartika

2

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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4

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

7

RUMUS BUFER ASAM

[H+] = Ka (mol)asam

(mol)garam​

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8

RUMUS BUFER BASA

[OH-] = (mol) basa

(mol) garam

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9

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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