LabReport2.pdf - Using Gravimetric Analysis to Determine Percent Sulfate By Brandon Carter Lab Partner Angeline Chen Introduction Purpose Statement For

# LabReport2.pdf - Using Gravimetric Analysis to Determine...

This preview shows page 1 - 2 out of 6 pages.

Using Gravimetric Analysis to Determine Percent Sulfate By Brandon Carter Lab Partner: Angeline Chen Introduction Purpose Statement: For this lab, you want to determine the percent of sulfate of your assigned sample by precipitating it into an insoluble salt. Using the mass of the precipitate as well as stoichiometry, calculate the percent sulfate using gravimetric analysis. Background: In this lab hydrates containing sulfate are going to be used in order to determine the percent sulfate in that solution. Hydrates are defined as a substance that contain either water or the continuent elements of water. With the experiment as well, gravimetric analysis will be utilized in order to determine the percent sulfate in your specific hydrate. Gravimetric analysis is considered to be a technique used to determine, and thus compare, the measurements of the mass of two compounds containing a specific analyte, which in this case is the sulfate. Procedures; 1. Number each of the 5 100 x 13 mm test tubes, then determine the mass of each of the clean and dry test tubes and record the data in a table 2. Pre-mass about .25 g of your sample on a piece of properly folded weighing paper and transfer substance to a massed test tube. Be certain that no sample contains less than .1g or greater than .3g of the sample 3.Find the mass of each test tube with the sample (use the small beaker to help) and record the data 4. Using one milliliter (around 20 drops) of water in each test tube, dissolve the crystals completely. Slightly heat test tubes in water bath (using 250 mL beaker). If the crystal don’t dissolve within a few minutes. The instructor demonstrated mixing in a test tube. Make sure to not use a stirring rod.

#### You've reached the end of your free preview.

Want to read all 6 pages?

• Winter '18
• Solubility, The Tubes, barium chloride, Angeline Chen

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern