Question

A solution contains 40ml of ethanol in 420 ml of water. Calculate the concentration (in terms of volume by voulme percentage ) of the soultion .

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Answer 1

SOLUTION

Molecular mass of ethanol =46g

Here we will take molecular mass of ethanol as the wt. of solute since Ethanol is solute here

Percentage by volume of solute

=) (wt. of solute × 100)/volume of solution

=) 46× 100/460

=) 4600/460

=) 10%

hope it helps ☺️

Answer 2

Answer:

heya.

To make the calculations easier, let's take a 1.00-L sample of this solution. The solution has a density of 0.947 g /mL , which means ... msolution=mwater+m ethanol.

i hope its help u