Question

$\huge \sf\bigstar \pink { QUESTION } \bigstar$

On mixing 15 ml of ethyl alcohol density 0.792 g/ml with 15 ml of pure water at 4°c, the resulting solution is found to have a density 0.924g/ml.The % contraction in volume is:-


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Answer 1

answer is in the attachment...

answer is in the attachment...hope it helps you...✨✨

Answer 2

Mass of alcohol=15×0.792=11.88g

Mass of water=15×1=15g

Total mass=11.88+15=26.88g

Volume of solution=mass of components/density of solution

=26.88/0.924=29.0909 mL

Expected volume=(15+15)=30mL

Difference=30-29.0909=0.909 mL

% Concentration in volume=Difference/Expected volume ×100

=0.909/30×100

=3.03%

Hope it helps you

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