Bags of Reactions Lab Essay

* Problem/ take aim * Background Information The equity of preservation of stool was created by Antoine Lavoisier in the eighteenth century. This law stated that mass could result could neither be created nor destroyed. During a reception the bonds of the reactants are broken and form sore substances. As stated in the faithfulness of Conservation, matter can neither be created nor destroyed because of this the products should have the same emergence and type of atoms as seen in the reactants. * employment Test the Law of Conservation of band.* speculation If we weight the mass of the materials forward and afterwards the reception, then we can prove if the Law of Conservation of lot is true.* Materials* Goggles* 25mL graduate cylinder* 2 resealable traveling suitcases* Scale* antiacid check* Scoopula* CaCl2 , Calcium Chloride* NaHCO3 , Sodium enthalpy Carbonate* Universal Indicator* appendage crock up A1. Mea reliable 25mL of urine and put into a resealable bul ge. Flatten none out of the cornerstone and seal it. get down the mass in tabular array 1. 2. phonograph recording the mass of the antacid tablet in Table 1 3. Tip the stem sideways, and while holding the clasp this way, summarise the tablet and water so not mix. Do not trap whatever extra air in the infrastructure. seal off the cup of tea. 4. Let the tablet drop into the water. hold on the reaction until it comes to a complete stop. enroll the observations. 5. When the reaction is complete, record the mass of the bag and its contents in Table 1. Part B6. Add two outmatchs of CaCl2 to the second bag 7. Add one scoop of NaHCO3 to the bag and shake gently to mix. 8. curb the mass of the bag and its contents. place down in Table 2. 9. Measure 25mL of water in a graduated cylinder. Add 10 drops of Universal Indicator to the water. 10. Tip the bag sideways, and while holding the solids in the speed part of the bag, pour the water into the bag so the solids dont mix. 1 1. safekeeping the trapped air to a minimum, reseal the bag. Hold the bag and let the liquefied move from one end of the bag to the other until the contents are mixed. 12. asseverate the reaction until it comes to a complete stop. Record your observations 13. Record the mass of the unopened bag in Table 2. Clean up your work and wash your hands before leaving the laboratory.* Data/ResultsTable 1 Antacid and WaterMass of bag and water 27.085gMass of tablet 3.21gMass of bag and reactants 30.305gMass of bag and products 28.14gTable 2 CaCl2, NaHCO3, and WaterMass of bag and dry reactants 4.09gVolume of water 25mLMass of water 24.925gTotal mass of bag and reactants 29.015gMass of bag and products 27.37g* Analysis/ proofA. Analysis Questions1. How do the ranges for the natural mass before and after distributively reaction demonstrate the law of preservation of mass? The values seem to be in the same general value 2. What were three observations you made that indicated a reaction had occurred in part A? The tablet started to fizz, the bag began to fill with gas, and you could hear the tablet reacting with the water. 3. An indicator changes color when the acidity of a solution changes. What evidence is there that much(prenominal) change occurred in Part B? The universal indicator changed to a lily-livered orange color 4. Did the reaction in Part B become to a greater extent acidic or basic? to a greater extent acidicB. Conclusion The lab showed us that the Law of Conservation of Mass is correct. I olfactory modality that there were some mistakes in the lab. The size of the scale we were using was not large abundant to fit the integral bag on for weighing. I feel that this bear upon the results we recorded for mass. If I were to retrace this experiment I would be sure to use a bigger scale. I feel the data was also affected by extra air left field in the bag. The results are close enough to show that the Law of Conservation of Mass is possible though when y ou take into accounts the trouble we had with the lab.