A solution of ethanol, C2H5OH, is prepared by dissolving 25.0 mL of ethanol in enough water to give a total volume of 250.0 mL. What is the percent-by-volume concentration of ethanol?

Question

A solution of ethanol, C2H5OH, is prepared by dissolving 25.0 mL of ethanol in enough water to give a total volume of 250.0 mL. What is the percent-by-volume concentration of ethanol?

Answer 1

Why did the ethanol go to therapy?

It had trouble finding its true volume and needed some guidance to get the percentage just right!

Now, let's find the percent-by-volume concentration of ethanol. To do this, we need to divide the volume of ethanol (25.0 mL) by the total volume of the solution (250.0 mL) and then multiply by 100 to get the percentage:

(25.0 mL / 250.0 mL) * 100 = 10.0%

So, the percent-by-volume concentration of ethanol in the solution is 10.0%.

Answer 2

To find the percent-by-volume concentration of ethanol in the solution, you need to calculate the volume of ethanol divided by the total volume of the solution, and then multiply by 100.

Step 1: Calculate the volume of ethanol:
Given that 25.0 mL of ethanol is dissolved in the solution.

Step 2: Calculate the total volume of the solution:
Given that the total volume of the solution is 250.0 mL.

Step 3: Divide the volume of ethanol by the total volume of the solution:
25.0 mL / 250.0 mL = 0.1

Step 4: Multiply the result by 100 to get the percent-by-volume concentration:
0.1 * 100 = 10

Therefore, the percent-by-volume concentration of ethanol in the solution is 10%.

Answer 3

To find the percent-by-volume concentration of ethanol, we need to know the volume of ethanol in the solution and the total volume of the solution. In this case, we are given that 25.0 mL of ethanol is dissolved in enough water to give a total volume of 250.0 mL.

The percent-by-volume concentration can be calculated using the formula:

Percent-by-volume concentration = (Volume of ethanol / Total volume of solution) * 100

In this case, the volume of ethanol is 25.0 mL and the total volume of the solution is 250.0 mL.

Now, let's calculate the percent-by-volume concentration of ethanol:

Percent-by-volume concentration = (25.0 mL / 250.0 mL) * 100

Percent-by-volume concentration = (0.1) * 100

Percent-by-volume concentration = 10.0%

So, the percent-by-volume concentration of ethanol in the solution is 10.0%.

Answer 4

percent v/v is (mL ethanol/mL solution)*100.

So you have 25.0 mL ethanol/250 mL
(25/250)*100 = 10% v/v.