Question

An aqueous magnesium chloride solution is made by dissolving 7.37 moles of MgCl2 in sufficient water so that the final volume of the solution is 4.30 L . Calculate the molarity of the MgCl2 solution.

Answer 1

The molarity of the magnesium chloride solution is 1.47 mol/L.

What is Molarity ?

Molarity is defined as number of moles of compounds present in a unit liter of volume of the solution

Given ;

• Moles of magnesium chloride = 7.37 moles
• Volume of solution = 4.30 L

Formula used ;

Molarity = Number of Moles / Volume of solution (Ltr)

Therefore, Putting values ;

Molarity = 7.37 moles / 4.30 L

              = 1.71 mol/ltr

The molarity of the given magnesium chloride solution is 1.71 mol/ltr

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