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What is the mole fraction of NaCl, when ...

What is the mole fraction of NaCl, when solution is prepared by dissolving 5.85 gram NaCl in 90 gram of water ?

A

`0.2`

B

`0.1`

C

`0.01`

D

`0.0196`

Text Solution

Verified by Experts

The correct Answer is:
D
`X_(NaCl)=(5.85//58.5)/((90)/(18)+(5.85)/(58.5))`
`= (0.1)/(5.1)`
= 0.0196.
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