TS EAMCET · Chemistry · Some Basic Concepts of Chemistry
\(138 \mathrm{~g}\) of ethyl alcohol is mixed with \(72 \mathrm{~g}\) of water. The ratio of mole fraction of alcohol to water is
- A \(3: 4\)
- B \(1: 2\)
- C \(1: 4\)
- D \(1: 1\)
Answer & Solution
Correct Answer
(A) \(3: 4\)
Step-by-step Solution
Detailed explanation
\begin{aligned} & \text { Number of moles of ethyl alcohol }=\frac{138}{46}=3 \\ & \text { Number of moles of water }=\frac{72}{18}=4 \\ & X_{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}}=\frac{3}{3+4}=\frac{3}{7} \\ & X_{\mathrm{H}_2 \mathrm{O}}=\frac{4}{3+4}=\frac{4}{7} \\ &…
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