Question

What is the number of moles of a solute that is dissolved in 1 L of solution ?

A. mass percent
B. molality
C.molarity
D.mole fraction

Answer 1

Molarity

Step-by-step explanation:

We need to know the definition of molarity;

What is molarity?

• Molarity is the concentration of a solution in moles per liter.

How is molarity calculated?

• Molarity is calculated by dividing the amount of solute in moles by the volume of solution in liters.

Example;

• If a 0.25 moles of Sodium hydroxide are dissolved in 500 mL of solution. Then molarity will be;

Molarity = Moles ÷ Volume

= 0.25 moles ÷ 0.5 L

= 0.5 Mol/L

Therefore, the molarity of sodium hydroxide solution will be 0.5 mol/L.