Question

25 ml of ethanol is present in 150 ml of its aquous solution. what is the concentration of the solution

Answer 1

Hey Friend!

Here is your answer:

Given,

volume of ethanol = 25 ml

volume of aqueous solution = 150 ml

Now,

Number of moles of ethanol = 25/(22.4 x 1000)

                                            = 1.12 x 10⁻³

Then, molarity of the solution is 1.12 x 10⁻³ x 10³/150

                                             = 1.12/150

                                             = 7.5 M

Answer : 7.5 mol/L

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