Knowing the Interrelationship Between the
Consolidation of Sodium Chloride Mixtures and Their Densities
Chemistry 1A Lab 5pm Th, Department of Chemistry, California State University Fresno
Professor Nimavat
Experiment Conducted: 1/25/18
Report Submitted: February 15th, 2018
Alex Luna* and Ellen
Introduction:
Density is defined as the ratio between mass and volume or mass per unit volume. It is a measure of how much stuff an object has in a unit volume. This report discusses an experiment to find out if there is a correlation between a salt solutions concentration and its density. Conduct 3 separate trials and take data measurements to determine the density of each salt solution. Determine the best procedure for measuring density (Beaker,
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Equation 1:
Absolute Error = Experimental Value – Accepted Value
Equation 2:
Standard Deviation:
Equation 3:
Density (ρ) = Mass (m) / Volume (V)
Equation 4:
General Methods and Materials:
In this experiment, the materials used were provided by California State University, Fresno chemistry stockroom. We used a lab coat and lab goggles. The materials used was a 10mL volumetric flask, and an electric balance.
Procedure:
In order to begin the experiment we need to understand our objectives. Know how to use an electronic balance, calibrate glassware, and know how to use a volumetric flask, calculate density and know how to calculate the percent error. The first thing we need to do is determine the best procedure for measuring density. The materials needed are going to be a 10mL volumetric flask. Conduct 3 separate trials where we will measure the density between different salt solutions. In this experiment we have 6% salt solution, 12% salt solution, 18% salt solution and 24% salt solution. We are going to weigh out the mass of the dry glassware, which will be a volumetric flask, and then the mass of the glassware with the water in it. After we measure the glassware with the water in it
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It is important to keep track of all of your data and format it in an organized matter. One thing that caused confusion in this experiment was jumping around from different measurements instead of going through them in order. Also there was some miscommunication in our group. Assign certain tasks to small groups within your group to eliminate some time and receive a more accurate measurement. The experiment tells us that the higher the amount of percent salt solution that’s in the volumetric flask, the higher the density will be.
Acknowledgements: Acknowledgements to our professor Ms. Monika Nimavat, California State University, Fresno, the tutors in the learning center for their patience and their help. +++