Question

What is the molarity of a solution made by dissolving 3.09 moles of NaCl in 1.50 L of solution?

Answer 1

2.06M NaCl

Step-by-step explanation:

Molarity is defined as a ratio of moles of the solute (the substance you're dissolving) to Liters of solution (the volume of the finished solution). It uses the letter capital M as an abbreviation for the unit.

We're given values for both numbers (with the correct units already), so substitute, and calculate the number part:

`(n_(solute))/(V_(solution))=\frac{3.09 [\text{mol NaCl}]}{1.50 [\text{L solution}]}=2.06\frac{[\text{mol NaCl}]}{[\text{L solution}]}=2.06[\text{M NaCl}]`