A) \[3:4\]
B) \[1:2\]
C) \[1:4\]
D) \[1:1\]
Correct Answer: A
Solution :
Number of moles of ethyl alcohol \[=\frac{138}{46}=3\] Number of moles of water \[=\frac{72}{18}=4\] \[{{X}_{{{C}_{2}}{{H}_{5}}OH}}=\frac{3}{3+4}\] \[=\frac{3}{7}\] \[{{X}_{{{H}_{2}}O}}=\frac{4}{3+4}\] \[=\frac{4}{7}\] \[\frac{{{X}_{{{C}_{2}}{{H}_{5}}OH}}}{{{X}_{{{H}_{2}}O}}}=\frac{3/7}{4/7}\] \[=\frac{3}{4}\]
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