Question

A solution is made by dissolving 15.0 mL of oil in enough gasoline to give 50.0 mL of solution. What is the % (v/v) of oil in the solution?

a. 30.0

b. 23.1

c. 42.9

d. 3.33

Answer 1

The percentage by volume of oil in the solution is calculated to be 30.0%, which is found by dividing the volume of oil by the total volume of the solution and multiplying by 100%.

Step-by-step explanation:

To calculate the percentage by volume (% v/v) of oil in the solution, divide the volume of the oil by the total volume of the solution and then multiply by 100%:

% v/v = (Volume of oil / Total volume of solution) x 100%

For the given problem:

% v/v = (15.0 mL oil / 50.0 mL solution) x 100% = 30.0%

Thus, the correct answer is a. 30.0 percent.