Question

Which statement best describes a procedure for making a 20 percent solution of a liquid detergent for an experiment?

A.) Add 10mL of liquid detergent to 2mL of distilled water.
B.) Add 20mL of distilled water to 5mL of liquid detergent.
C.) Add 5mL of distilled water to 20mL of liquid detergent.
D.) Add 2mL of liquid detergent to 10mL of distilled water.

Answer 1

The answer is B. Add 20mL

Answer 2

Percentage solution is the solution which is expressed in % unit.

The formula is given by:

Volume percent=
`(volume of solute in mL)/(volume of the solution in mL)* 100`

Now, put all the given values of volume of liquid detergent and water in mL to identify the correct answer.

A. Volume percent =
`(10 mL)/(2 mL)* 100`

= 500 percent

B. Volume percent =
`(5 mL)/(20 mL)* 100`

= 25 percent

C. Volume percent =
`(20 mL)/(5 mL)* 100`

= 400 percent

D. Volume percent =
`(2 mL)/(10 mL)* 100`

= 20 percent

Thus, when volume of liquid detergent is 2 mL and volume of water is 10 mL gives 20 percent solution of liquid detergent for an experiment.

Option (D) is correct answer.