Stoichiomety Lab

stoichiometric Analysis Formal Lab tarradiddle I. Purpose- The goal of this science laboratory is to show stoiciometric reactions and relationships graduation exercise hand. It in any case increases our level of understanding almost the complicated relationships in chemical reactions and in stoichiometry. II. Introduction- In chemical reactions and formulas there argon various relationships between freshetes of reactants and products. The record of these relationships is c bothed stoichiometry which is derived from the Greek words stoichein meaning share and metron meaning mea authorized.Stoichiometry is helpful in predicting outcomes of reactions or square offing out miss parts in reactions. It can also help you determine noncitizen compounds. III. Methods- add together a small sample of MnO2 to a dry test tube. Find the mass of this by zeroing a beaker on a scale and placing the tube inside. Place virtually 2. 00 g of KCLOx into the test tube. Record the bare-ass mas s, and mix the two reactants. Put in test tube clamp at a 45 degree angle. soup up the mixture for about 5 minutes. renounce 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 counterspy 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 apply in a real fact to find something out. I think that the purpose of the lab was reached.It was helpful in modify my understanding of stoichiometry by using exact thinking to solve a bother. thither was plenty of room for error. The results could be throw off if the error is too great. technique was needed in making sure the entire sample was reacted and keeping all of it in the test tube. VI. Questions- 1. The definition of stoichiometry has grow meaning measure and share. In the prototypal 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 will have the alike charge regardless of how many Os are present. 4. The heating emergence is the same in both reactions because we requirement the level of dissolution to be consistent. With a different heating method the decomposition could vary and throw off the calculations. 5. The learner could be asked to calculate the theoretical offspring and compare/ calculate it to the actual pay to find out their error.