Stoichiomety Lab

Stoichiometric Analysis Formal Lab base I. Purpose- The purpose of this research lab is to show stoiciometric replys and relationships first hand. It also increases our level of catch more or less the complicated relationships in chemic reactions and in stoichiometry. II. Introduction- In chemical reactions and formulas there are various relationships between masses of reactants and products. The study of these relationships is called stoichiometry which is derived from the classical words stoichein meaning factor and metron meaning measure.Stoichiometry is adjuvant in predicting outcomes of reactions or arriveing out missing parts in reactions. It female genital organ also help you determine unknown compounds. III. Methods- Add a slender sample of MnO2 to a dry trial run tube. Find the mass of this by zeroing a beaker on a scale and placing the tube inside. Place about 2. 00 g of KCLOx into the test tube. cross-file the new mass, and mix the two reactants. edit in tes t tube clamp at a 45 degree angle. Heat the mixture for about 5 minutes. Allow to cool. Record the new mass.Repeat these steps with the KCLOx/KCLO mixture. IV. Results- KCLOx 1. 19. 78 g 2. 21. 88 g 3. 2. 10 g 4. 21. 12 g 5. 1. 34 g KCL 6. .66 g O2 7. .017 groin KCL 8. .041 mol O2 9. KCLO3 10. 2 KCLO3 ( 2 KCL + 3 O2 KCL/ KCLOx 1. 23. 79 g 2. 25. 83 g 3. 2. 04 g 4. 25. 38 g 5. 1. 59 g KCL 6. .45 g O2 7. .014 mol O2 8. .009 mol KCLOx 9. 1. 10 g KCLOx 10. .539 % KCLOx in mixture V. Conclusion- This lab showed us how stoichiometry can be used in a very situation to find something out. I think that the purpose of the lab was reached.It was helpful in strengthening my understanding of stoichiometry by using critical thinking to solve a problem. There was plenty of room for error. The results could be propel off if the error is too great. Technique was needed in make sure the entire sample was reacted and keeping all of it in the test tube. VI. Questions- 1. The definition of stoichio metry has roots meaning measure and element. In the first reaction you are trying to find the number or measure of an element that is present in a unknown quantity. . d 3. Ion charges arent a problem in determining mathematical relationships because the anion in the compound result have the same charge regardless of how many Os are present. 4. The heating process is the same in both reactions because we regard the level of decomposition to be consistent. With a different heating rule the decomposition could vary and throw off the calculations. 5. The student could be asked to work out the theoretical yield and compare/ calculate it to the actual yield to find out their error.