184 g ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is
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a
3 : 4
b
1 : 2
c
1: 4
d
1 : 1
answer is D.
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Detailed Solution
Number of moles of C2H5OH=18446=4; MC2H5OH=46g/molNumber of moles of H2O=7218=4; ((MH2O=18 g/mol) Mole fraction, xC2H5OH=44+4=48 xH2O=44+4=48⇒ xC2H5OHxH2O=4/84/8=11=1:1