Question

Calculate the molarity of the solution.

4.32 x 102 moles of CH3COOH in 20.0 liters of water

Answer 1

4.32 * 10² moles = 432 moles.

Molarity = Number of solute in Moles / Volume of solvent in dm³

Solvent = 20 liters, and note 1 liter = 1 dm³

20 liters = 20 dm³

Molarity = Number of solute in Moles / Volume of solvent in dm³

Molarity = 432 / 20 = 21.6

Molarity = 21.6 M.