A saline solution was prepared by dissolving 5.45 g sodium chloride to 96.77 g water. What is the concentration in weight percent for this saline solution?
To find the weight percent concentration of a solution, you need to compare the mass of the solute (sodium chloride) to the total mass of the solution (sodium chloride + water), and then multiply by 100 to get the percentage.
Step 1: Calculate the total mass of the solution
Total mass = Mass of sodium chloride + Mass of water
Total mass = 5.45 g + 96.77 g
Total mass = 102.22 g
Step 2: Calculate the weight percent concentration
Weight percent concentration = (Mass of sodium chloride / Total mass of the solution) x 100
Weight percent concentration = (5.45 g / 102.22 g) x 100
Weight percent concentration ≈ 5.34%
Therefore, the concentration in weight percent for this saline solution is approximately 5.34%.