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5.85 g of NaCl are dissolved in 90 g of ...

5.85 g of NaCl are dissolved in 90 g of water, the mole fraction of NaCl is :

A

0.1

B

0.01

C

0.2

D

0.0196

Text Solution

Verified by Experts

The correct Answer is:
D
Moles of NaCl`=(5.85)/(58.5)=0.1`
Moles of water `=(90)/(18)=5`
Mole fraction of NaCl `=(0.1)/(5+0.1)=0.0196`
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