Question

To make a 4.00 M solution, how many moles of solute will be needed if 12.0 liters of solution are required?

Answer 1

To make a 4.00 M solution, 48 moles of solute will be needed if 12.0 liters of solution are required.

Step-by-step explanation:

Molar concentration or molarity is a measure of the concentration of a solute in a solution, be it some molecular, ionic or atomic species.

Molarity is defined as the number of moles of solute that are dissolved in a given volume. Then it is calculated as the quotient between the number of moles of solute and the volume of solution:

`Molarity= (number of moles of solute)/(volume)`

Molarity is expressed in units
`(moles)/(liter)=M`.

In this case:

• Molarity= 4 M
• numbre of moles of solute= ?
• volume= 12 liters

Replacing:

`4 M= (number of moles of solute)/(12 liters)`

Solving:

4 M*12 liters= number of moles of solute

48 moles= number of moles of solute

To make a 4.00 M solution, 48 moles of solute will be needed if 12.0 liters of solution are required.