Answer to Question #308892 in Chemistry for Junard

Question

Calculate the molarity of a solution containing 2.8 moles of ethyl alcohol (C₂H6O) in 500mL of solution.

Answer 1

Solution:

Molarity = Moles of solute / Liters of solution

Moles of solute = Moles of C₂H₆O = 2.8 mol

Liters of solution = (500 mL) × (1 L / 1000 mL) = 0.5 L

Therefore,

Molarity of solution = (2.8 mol) / (0.5 L) = 5.6 mol/L = 5.6 M

Molarity of solution = 5.6 M

Answer: The molarity of C₂H₆O solution is 5.6 M