Calculate the molarity of a solution
made by 1,5kg of K. CO₂ in 850 mL
of water.

17.83M

Explanation:

Given parameters:

Mass of KCO₂ = 1.5kg

Volume of water  = 850mL

Unknown:

Molarity of solution  = ?

Solution:

Molarity is defined as the number of moles per unit volume. It is the number of moles of solute in a given volume of solution.

   Molarity  =

Number of moles of solute  =

  Molar mass of KCO₂  = 39 + 12 + 3(16) = 99g/mol

  Number of moles  =   = 15.15moles

   850mL : gives 0.85L

Molarity  =   = 17.83M