What is the molarity of a solution in which 58.00 g of NaCl are dissolved in 1.0 L of solution?

Answer 1

Molarity is defined as moles solute (NaCl) per liter of solution.

First find the moles of NaCl:

58.00 g NaCl x 1 mol NaCl/58.44 g. = 0.9925 moles

How many liters of solution are there? One (1.0) liters.

Molarity = 0.9925/1.0 = 1.0 M (to 2 significant figures)