Empirical Formula of a Hydrate-CE Essay Example for Free

Empirical Formula of a Hydrate-CE EssayConclusion and Evaluation flavour 1 Based on the interpreted info of group A, the empirical formula of aluminum chloride did not stay the same. The expected empirical formula was. In group A the empirical formulas atomic number 18 as followedGroup NameEmpirical formulaLaurie JordanRica, Victoria StephanieVince JoshJane KaitylnSo, as a group, we all had a different outcome of the empirical formula but the percent composition of water is the same for all. 11.2% for hydrogen and 88. 8% for oxygen as shown in put off 7.3.A random error would be the measurement of the hydrate crystal. A scoopula was used to measure 3g. Also another one would be the electronic relaxation having an uncertainty of 0.001g. A systematic error would be heating the evaporating dish through a electrify mesh instead of a clay triangle.You post-horse that the theoretical yield and experimental yield values are shown in a pie graph. Both of the pie graphs are the exact same as both percentages are 11.2% and 88.8%. In these pie graphs, neither trends nor patterns apply.Aspect 2 The procedural weaknesses are stated above. For example the measurement of the hydrate crystal wouldve affected the lab. There wasnt an accurate measurement so that couldve affected the weight of the final product or the reaction of the product. Another weakness was that the evaporating dish was being heated through a wire mesh instead of a clay triangle. The wire mesh had a white coating on it, so therefore the evaporating dish was being heated indirectly and the wire mesh would absorb the heat itself. This would affect the heating process of the evaporating dish and the tenderness inside of it. There were a few assumptions make in this particular lab. They are as followedAssumptionPossible force-out on the resultAll of the moisture was removed from the evaporating dishIf all the moisture wasnt removed, then an accurate and precise reaction isnt obtained.The al uminum chloride was pureIf impure aluminum chloride was used then other products could have formedThe only substance reacting with the aluminum chloride was itself as a hydrate formThis could have had other reactions which therefore will affect the products formed.All of the aluminum chloride hydrate evaporatedCould possibly effect the measurement of the weight3g of aluminum chloride was added to the evaporating dishObviously if there were less or more than 3g added, it will affect the outcome resultThe quality of the data was fair. The precision and accuracy of the aluminum was absent since it was measured by a scoopula and estimation. Although, the same balance was used to weigh all the masses, therefore the accuracy of those measurements were parade with the exception of the uncertainty0.001g.Aspect 3 If this lab were to be redone, I think that everything should stay the same besides 2 factors which are the use of wire mesh and the measurement of the hydrate crystal. If we were to use a clay triangle instead of the wire mesh, the evaporating dish would have been directly heated instead of being indirectly heated. This would remove the systematic error. A better precision and accuracy would be obtained if we actually used a measuring device. For example, a measuring spoon wouldve been more accurate than the scoopula. Using the same balance for all masses would obtain greater control of variables and reduce the random error.