JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
A solution is prepared by adding 1 mole ethyl alcohol in \(9\) mole water. The mass percent of solute in the solution is _______. (Integer Answer) (Given : Molar mass in \(\mathrm{g} \mathrm{mol}^{-1}\) Ethyl alcohol : \(46\), water : \(18\))
- A \(20\)
- B \(22\)
- C \(30\)
- D \(35\)
Answer & Solution
Correct Answer
(B) \(22\)
Step-by-step Solution
Detailed explanation
\(\text { Mass percent of Alcohol }\) \(=\frac{\text { Mass of ethyl alcohol }}{\text { Total mass of solution }} \times 100\) \(=\frac{1 \times 46}{1 \times 46+9 \times 18} \times 100=\frac{4600}{208}\) \(=22.11 \text { Or } 22\)
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