Molarity Calculation

Q.
What is the molarity of 250cm3 sodium chloride solution containing 2 moles NaCl?
A.
Molarity = moles / liters

(1) Convert 250 cm^3 to liters: (250 mL)(1 L / 1000 mL) = 0.250 L (NOTE: 1 mL = 1 cm^3)

(2) Divide 2.0 moles by the number of liters: 2 mol. / 0.250 L = 8.0 mol/L

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