Question

A 10 M concentrated stock solution of NaCl is used to prepare 2 liters of diluted 1 M

solution. Which of the following is true for the process used to achieve the required
dilution? (5 points)
O The volume of the solvent used is less than 0.1 liters.
O The volume of stock solution used is less than 0.1 liters.
The volume of stock solution used is more than 2 liters.
The volume of the solvent used is less than 2 liters.

Answer 1

Answer: The volume of the solvent used is less than 2 liters.

Step-by-step explanation:

Answer 2

Answer: It is true for the process used to achieve the required dilution that volume of the solvent used is less than 2 liters.

Step-by-step explanation:

Given:
`M_(1)` = 10 M,
`V_(1)` = ?

`M_(2)` = 1 M,
`V_(2)` = 2 L

The volume of stock solution is calculated as follows.

`M_(1)V_(1) = M_(2)V_(2)\\10 M * V_(1) = 1 M * 2\\V_(1) = 0.2 L`

A solution which contains small amount of solute is called a dilute solution. Whereas a solution which contains more amount of solute is called a concentrated solution.

The stock solution is used for dilution and hence, it acts as a solvent. Its calculated volume is 0.2 L.

This means that volume of the solvent used is less than 2 liters.

Thus, we can conclude that it is true for the process used to achieve the required dilution that volume of the solvent used is less than 2 liters.