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inn [45]
3 years ago
6

An aqueous solution contains

Chemistry
1 answer:
WARRIOR [948]3 years ago
4 0

The mole fraction of KCl = 0.105

<h3>Further explanation</h3>

Given

%w/w KCl = 32.7

Required

the mole fraction of KCI

Solution

For 100 g solution : KCl = 32.7 g, H₂O = 67.3 g

mol KCl :

\tt \dfrac{32.7}{74.55~g/mol}=0.439

mol H₂O :

\tt \dfrac{67.3}{18.016}=3.74

total mol of solution = 0.439+3.74=4.179

mol fraction of KCl :

\tt \dfrac{0.439}{4.179}=0.105

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