Question

What is the molarity of a solution containing 11.2 g Ca(NO3)2 in 175 mL of solution? What is the molarity of a solution containing 11.2 in 175 of solution? 1.96×103 M 64.0 M 0.063 M 0.390 M

Answer 1

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. We do as follows:

11.2 g Ca(NO3)2 in 175 mL of solution

Molarity = 11.2 g Ca (NO3)2 (1 mol / 164.09) / .175 L solution
Molarity = 0.390 M