Question

To make a 3.50 M solution, how many moles of solute will be needed if 11 liters of solution are required?

Answer 1

The number of moles is 38.5 moles

Step-by-step explanation:

Given:

Concentration of the solution = 3.5 M

Volume of solution = 11 L

Question: How many moles of solute, nsol = ?

The molarity is the number of moles of the solute divided by the volume of the solution, in this case:

`n_(sol) =Molarity*Volume=3.5(mol)/(L) *11L=38.5moles`

Answer 2

To make a 3.50 M solution, 38.5 moles of solute will be needed if 11 liters of solution are required.

Step-by-step explanation:

Molarity is defined as a concentration unit that indicates the number of moles of solute per liter of solution. That is, it indicates the number of moles of solute that are dissolved in a given volume. Then, the molarity is calculated by dividing the moles of the solute by the liters (volume) of the solution:

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

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

So, knowing the definition of molarity, you can apply a rule of three as follows: if by the definition of molarity in 1 L of solution there are 3.5 moles of solute, in 11 L of solution how many moles of solute are there?

`moles=(11 L*3.5 moles)/(1L)`

moles=38.5

To make a 3.50 M solution, 38.5 moles of solute will be needed if 11 liters of solution are required.