# What is the molarity of a solution made when water is added to 11 g CaCl2 to make 100 mL of solution?

##### 1 Answer
Jul 2, 2014

Molarity of a solution is defined as number of moles of solute dissolved per liter of solution.

Molarity ( M) =  of moles of solute / volume of solution (L)

Volume of Solution = 100 mL or 0.1 L

moles of Ca$C {l}_{2}$ = mass of Ca$C {l}_{2}$ / molar mass of Ca$C {l}_{2}$

moles of Ca$C {l}_{2}$ = 11g / 111 g$m o {l}^{-} 1$ = 0.099 mol

Molarity ( M) =  of moles of solute / volume of solution (L)

Molarity (M) = 0.099 mol / 0.1 L = 0.99mol/ L