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.

50ml

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40ml

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30ml

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20ml

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Solution

The correct option is B
40ml

Let the volume of ethyl alcohol (solute) be 'X' ml
Volume of water (solvent) = 100ml
Total volume of solution = 100 + X
Volume by volume(percentage) = $\frac{v o l u m e o f s o l u t e}{v o l u m e o f s o l u t i o n} \times 100$
Using above formula, we get X = 40ml

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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 40mlLet the volume of ethyl alcohol (solute) be 'X' ml Volume of water (solvent) = 100ml Total volume of solution = 100 + X Volume by volume(percentage) = volume of solutevolume of solution×100 Using above formula, we get X = 40ml

The correct option is B
40ml

Let the volume of ethyl alcohol (solute) be 'X' ml
Volume of water (solvent) = 100ml
Total volume of solution = 100 + X
Volume by volume(percentage) = $\frac{v o l u m e o f s o l u t e}{v o l u m e o f s o l u t i o n} \times 100$
Using above formula, we get X = 40ml