JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties
A solution is prepared by adding \(2\,g\) of " \(X\) " of \(1\,mole\) of water. Mass percent of " \(X\) " in the solution is \(.............\%\)
- A \(20\)
- B \(5\)
- C \(2\)
- D \(10\)
Answer & Solution
Correct Answer
(D) \(10\)
Step-by-step Solution
Detailed explanation
Solute \(( X )=2\,g\) Solvent \(\left( H _2 O \right)=1\) mole \(=18\,g\) Total mass \(=2+18=20\,g\) \(\%\) mass of \(X =\frac{2}{20} \times 100=10 \%\)
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