A) \[0.1\]
B) \[0.4\]
C) \[0.7\]
D) \[0.9\]
Correct Answer: A
Solution :
Mole fraction \[=\frac{moles\text{ }of\text{ }water}{moles\text{ }of\text{ }water+moles\text{ }of\text{ }ethanol}\] Mol. wt. of \[{{H}_{2}}O=18mol\].wt. of \[{{C}_{2}}{{H}_{5}}OH=46\] Mole fraction of water \[=\frac{18/18}{18/18+414/46}\] \[=\frac{1}{1+9}=\frac{1}{10}=0.1\]
You need to login to perform this action.
You will be redirected in
3 sec
