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AP EAMCET2007ChemistrySome Basic Concepts of Chemistry

138 ~g of ethyl alcohol is mixed with 72 ~g of water. The ratio of mole fraction of alcohol to water is

Options

  1. A3: 4
  2. B1: 2
  3. C1: 4
  4. D1: 1

Correct answer

A. 3: 4

Step-by-step solution

aligned & Number of moles of ethyl alcohol = 138 46 =3 & Number of moles of water = 72 18 =4 & X_ C ₂ H ₅ OH = 3 3+4 = 3 7 & X_ H ₂ O = 4 3+4 = 4 7 & X_ C ₂ H ₅ OH X_ H ₂ O = 3 / 7 4 / 7 = 3 4 aligned

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