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In an aqueous solution ethylene glycol h...

In an aqueous solution ethylene glycol has the mass percentage (% w/w) 30% then the mole fraction of ethylene glycol will be :-

A

0.428

B

0.124

C

0.11

D

0.889

Text Solution

Verified by Experts

The correct Answer is:
C
30g ethylene glyocol `(HO-CH_(2)-CH_(2)-OH)` is in 100 mL solution.`:."moles of" C_(2)H_(6)O_(2)=(30)/(62)=0.484`
and moles of `H_(2)O=(70)/(18)=3.89`
`X_(C_(2H_(6_O_(2)))=(0.484)/(0.484+3.89)=(0.484)/(4.347)=0.11`
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