What is the molarity (mol/dm3) of a solution prepared by dilution of 0.125 moles of sodium chloride (NaCl) to 2.50x102 mL with water?
M = mols/L
15MOL
To find the molarity of a solution, you need to know the amount of solute (in moles) and the volume of the solution (in liters).
Given:
Amount of solute (n) = 0.125 moles
Volume of solution (V) = 2.50x10^2 mL
First, convert the volume of the solution from milliliters (mL) to liters (L):
V = 2.50x10^2 mL = 2.50x10^2 / 1000 = 0.250 L
Next, use the formula for molarity:
Molarity (M) = n / V
Substitute the given values into the formula:
M = 0.125 moles / 0.250 L
Now, divide 0.125 by 0.250 to find the molarity:
M = 0.5 mol/L
Therefore, the molarity of the solution prepared by diluting 0.125 moles of sodium chloride (NaCl) to a volume of 2.50x10^2 mL with water is 0.5 mol/L or 0.5 mol/dm^3.