In the preparation of a rock salt solution, 1.522 grams of impure rock salt was dissolved in 50.0 ml of distilled water. The total mass of the solution was found to be 51.522 grams. Calculate the weight percent of impure rock salt in the prepared solution.
weight % = (grams solute/100 g solution)*100 = ?
%impure NaCl w/w = (1.522/51.522)*100 =
To calculate the weight percent of impure rock salt in the prepared solution, you need to determine the mass of the rock salt dissolved in the solution, and then divide it by the total mass of the solution, and finally multiply by 100 to get the weight percent.
Let's break down the steps to solve this problem:
Step 1: Calculate the mass of the rock salt dissolved in the solution.
To do this, subtract the mass of the solution from the total mass of the solution.
Mass of rock salt = Total mass of the solution - Mass of the solution
Mass of rock salt = 51.522 g - 50.0 g
Mass of rock salt = 1.522 g
Step 2: Calculate the weight percent of the rock salt.
To do this, divide the mass of the rock salt by the total mass of the solution, and multiply by 100.
Weight percent of rock salt = (Mass of rock salt / Total mass of the solution) x 100
Weight percent of rock salt = (1.522 g / 51.522 g) x 100
Weight percent of rock salt = 2.95%
So, the weight percent of impure rock salt in the prepared solution is 2.95%.