Konsentrasi Larutan

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KONSENTRASI LARUTAN 1. Prosentase Menyatakan jumlah gram terlarut dalam 100 gram larutan 2. Molaritas (M) Menyatakan jumlah mol zat terlarut dalam 1 liter larutan

M= Keterangan: M = molaritas (M) G = berat zat terlarut (gram) Mr = massa molekul relative zat terlarut V = Volume larutan 3. Molalitas (m) Menyatakan jumlah mol zat terlarut dalam 1 liter larutan

m= keterangan: m = molalitas (m) G = berat zat terlarut Mr = masa molekul relative zat P = jumlah gram pelarut 4. Fraksi Mol (x) Perbandingan jumlah mol suatu zat dalam larutan dengan jumlah mol seluruh zat dalam larutan. Fraksi mol = x

XA = XB =

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5. Normalitas (N) Hubungan jumlah gram ekivalen (grek) zat terlarut dalam satu liter larutan.

N= BE

= berat ekivalen =

Atau

=

Pengenceran Larutan V1. M1 = V2. M2 V1 = volume awal V2 = volume akhir M1= konsentrasi awal M2= konsentrasi akhir

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