A solution contains 40ml of ethyl alcohol mixed with 100ml of water. What is the concentration of this solution? Also, find out mass of ethyl alcohol required to make a solution of the same concentration.
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Volume of solute (ethanol): 40 ml
Volume of solvent (water): 100 ml
∴ Volume of solution = 40+100 = 140 ml
Concentration = Volume of solute / Volume of solution
= 40 / 140 × 100
= 28.59 % (approx.)
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