A solution contains x ml of ethyl alcohol mixed with 100ml of water. The concentration of the solution is $28.6 %$ in terms of volume by volume percentage. Find x.

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Solution

The correct option is B
40

Let the volume of ethyl alcohol(solute) be x ml

Volume of water (solvent)=100 ml

Total volume of solution = 100 + x ml

Volume by volume $% = \frac{v o l u m e o f s o l u t e}{v o l u m e o f s o l u t i o n} \times 100$

$x \times \frac{100}{(x + 100)} = 28.6$

Volume of solute (x) = 40 ml

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A solution contains x ml of ethyl alcohol mixed with 100ml of water. The concentration of the solution is 28.6% in terms of volume by volume percentage. Find x.

The correct option is B 40 Let the volume of ethyl alcohol(solute) be x ml Volume of water (solvent)=100 ml Total volume of solution = 100 + x ml Volume by volume %=volume of solutevolume of solution×100 x×100(x+100)=28.6 Volume of solute (x) = 40 ml

A solution contains x ml of ethyl alcohol mixed with 100ml of water. The concentration of the solution is $28.6 %$ in terms of volume by volume percentage. Find x.