Reactions of Copper and Percent Yield

chemical responses of slob and Percent YieldPurpose-The purpose of this experiment is to examine the alchemy of grunter and with the concept of percent fail. /2Procedure- CHEM16882, Applied Chemistry1 Laboratory manual test no.6 posted on slate/Sheridan college, Brampton (accessed on 20.feb.2017) (1). /2Observations attain your own data table for quantitative data. The table must every(prenominal)ow in all the measurements you recorded in the laboratory it must have a table number and title.Answer- Table for quantitative data measured patch conducting the experiment.CompoundMass(+ /- 0.0001g)Initial weight of bruiser0.5189gFinal weight of papal bull0.5651gWeight of 250 ml empty beaker117.29gEvaporating traveling bag56.2529gFinal weight of strapper + evaporating dish56.8180g /4In table format record qualitative observations for each of the flipper reactions. All observations must be written in complete sentences. The table(s) must have a table number and title.Answer-T able 1. response 1. Cu + somatogenic sayThe carnal state of copper is inviolable.The strong-arm state of Nitric acid is unruffled. dogshit2 nitrate is liquid in nature. nitrogen dioxide is a gas.Water i.e. dihydrogen monoxide O ) is a crystal clear.ColorThe color of copper is brownnessNitric acid is clear.Copper 2 nitrate is in Blue green color.Nitrogen dioxide is in brownish shadeDihydrogen monoxide is Clear. surplus OBSERVATION-Heat is generated during this experiment.Table 2. reply 2. CuPhysical stateThe physical state of copper nitrate is lucid.The physical state of sodium hydroxide is Liquid.Copper hydroxide is steadfast in nature.Sodium nitrate is in Liquid form.ColorIt is in Blue green color.It is Clear.It is Black in color.It is in Dark blue color.ADDITIONAL OBSERVATION-Blue precipitates be formed when NaOH is added.Table 3. Reaction3. CuPhysical stateThe physical state of copper hydroxide is Solid.Copper hydroxide is Solid.The physical state of dihydrogen monoxide is Solid.ColorIt is Dark blue in color.It is in Black color.Table 4.Reaction 4. CuO + Physical stateThe physical state of copper hydroxide is solid.Sulphur acid is in Liquid form.Copper hydroxide is liquid.The physical state of dihydrogen monoxide is Solid.ColorIt is in neutral t unrivalled.It is Colorless.It is Light blue in color.Table 5.Reaction 5. CuPhysical stateThe physical state of copper sulphate is Liquid.Zinc is a Solid.Zinc sulphate is solid in nature.Copper is in Solid form.ColorIt is Black in color.It is Silver in color.It is Colorless.It is Reddish/brown in color.ADDITIONAL OBSERVATION-Heat is generated during this reaction.Write balanced chemical equations for each of the five reactions. Identify and name the product(s) for each reaction. State whether the product is a solid, liquid or gas.Answer-Reaction 1Reaction 2Reaction 3Reaction 4Reaction 5/5For each of the five reactions, break the type(s) of reaction each is. Your choices are decomposition reaction, oxidati on-reduction reaction, acid-base reaction, combustion reaction, genius displacement reaction, double displacement reaction and synthesis reaction.Answer-Reaction 1.It is a decomposition reaction.Reaction 2.It is a double displacement reaction.Reaction 3.It is genius displacement reaction.Reaction 4.It is Acid Base Reaction.Reaction 5.It is a oxidoreduction Reaction i.e. oxidation reduction reaction because coat loses 2 of its electrons and copper gains 2 electrons. /3CalculationsAll calculations must show the equation apply (typed with equation editor), units must be present with all numbers and the closing answer must be recorded with the correct number of satisfying figures. 1. Calculate the % break of Cu at the end of the five reaction steps. (This could also be referred to as the % recovery of Cu.) Show ALL calculations.Answer- true plentifulness of copper=0.5189gFinal mass of copper obtained=Mass of evaporating dish and copper (g) Mass of empty flat evaporating dish( g)=56.8180g-56.2529g=0.5651g=0.56gPercentage allow %= =/32. For Reaction 1 amidst Cu and HNO3, calculate the theoretical abide of Cu(NO3)2 in grams.Answer-Reaction 1. molecular mass of Cu =63.546g/mol molecular mass of HN=63.01284g/molMolecular mass of =187.554g/molMole of Cu =Theoretical yield of =/33. For Reaction 1 between Cu and HNO3, confirm that HNO3 was present in excess. (Show a calculation to embolden your answer) Answer- Reaction 1. Molecular mass of Cu =63.546g/molMolecular mass of HN=63.01284g/molMolecular mass of =187.554g/molMole of Cu =Theoretical yield of =/24. For Reaction 2, calculate how many moles of NaOH you added.Answer-Reaction 2Molecular mass of =187.54g/molMole of NaOH=1.4g /2QuestionsWhat complex was being removed in the procedural step where 150 mL of hot R.O. irrigate was added to the solid CuO precipitate? Do you think that all of this compound was removed by this laundry? How could this error affect your percent yield? How could this error be mi nimized?Answer-Hydroxide atoms was being removed in the step of outgrowth where 150 ml hot water was added to CuO solid precipitate.No, I dont think so that all of compound was taken send off by washing it. Some classifyicles were added by human error, which resulted in change magnitude amount of the product which affected the final result i.e. percent yield of copper.The chances of error can be reduced by various methods. angiotensin converting enzyme such method is by making some changes in procedure i.e. washing of precipitates entirely until the particles are removed thoroughly or by increasing dissolution process./62. List two errors that could increase your % yield and two errors that could decrease % yield. Describe one of each type in details.Answer Two errors that may occur during conducting the experiment which could increase the % yield of copper are as follows-By human error, i.e. while washing method some of the water cannot be removed from NaNO3 particles from cop per hydroxide particles which will result in increased mass of final product.In the final result we got more mass than the actual mass because zinc does not fully react with CuSO4. Some particles still remain inner(a) with the copper.Two errors that may occur during the experiment which could decrease %yield are as follows-Some particles remain left inside the beaker while transferring from one to another which reduced the weight resulted in %yield.Some particles stay transferred into the beaker with water and there was loss in the weight which affected the result and we get more mass than actual mass value. /8Conclusion(s) /3To essence up, the final mass of copper which is obtained after performing the experiment was greater than the initial copper mass.Reference(s)1.https//slate.sheridancollege.ca/d2l/le/content/348286/viewContent/5357151/View (accessed on 20.feb.2017)2. AC1 Experiment 6/Template_Copper Percent Yield, Ques 2./2Teacher Evaluation (Students leave this part blank) Overall organization of lab report formatting of chemical and numeral equations clarity of answers spelling and grammar attention to details completed cover bed sheet use of headers and footers.Laboratory performance punctuality time management group work attention to safety use of personal protection equipment apply appropriate lab techniques preparation of lab data book in advance of the lab cleanup of lab work area./5 jibe laboratory grade /55Professors suggestions for improvement