Solutions Question 137

Question: If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is [CMC Vellore 1991; MP PMT 1994; AFMC 1998]

Options:

A) 0.1

B) 0.2

C) 0.3

D) 0.01

E) 0.0196

Show Answer

Answer:

Correct Answer: E

Solution:

5.85 g NaCl = 5.8558.5,mole=0.1mol 90 g H2O=9018,moles=5moles mole fraction of NaCl = 0.15+0.10.0196 .



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