Question

What is the molarity of a solution containing 3.5 moles of HCl in 5.0 L of water?

A) 0.70 M
B) 1.4 M
C) 3.5 M
D) 18 M.

Answer 1

0.70 M

Step-by-step explanation:

• Molarity is the concentration of a given solution in moles per liter.
• Molarity is given in moles per liter of solution.
• It is calculated by dividing the moles of solute by the volume of solution.

In this case;

We are given;

Number of moles of HCl = 3.5 Moles

Volume of solvent, H₂O is 5.0 L

But,
`Molarity =(Numberofmoles)/(Volume)`

Therefore;

`Molarity=(3.5moles)/(5.0L)`

= 0.70 M

Thus, the molarity of the solution is 0.70 M or 0.70 moles/liter