Solutions Question 245
Question: A solution contains 1 mole of water and 4 mole of ethanol. The mole fraction of water and ethanol will be
Options:
A) 0.2 water + 0.8 ethanol
B) 0.4 water + 0.6 ethanol
C) 0.6 water + 0.8 ethanol
D) 0.8 water + 0.2 ethanol
Show Answer
Answer:
Correct Answer: A
Solution:
0.2 water + 0.8 ethanol; $ X_{A}= $ mole fraction of water, $ X_{B}= $ mole fraction of ethanol $ X_{A}=\frac{N_1}{N_1+N_2} $ , $ X_{B}=\frac{N_2}{N_2+N_1} $
$ \therefore $ Mole fraction of water = 0.2 and ethanol = 0.8.
