Question

Experimental Yleld x 100% = Percent Yleld% (Equation 4) Theoretical Yleld Before you start the lab, it will be helpful to practices a few related problems. The information here is helpful when you complete your lab submission. ACTION REQUIRED Find the atomic masses of copper and chlorine, and the calculate the molar mass of CuCla. Keep THREE decimal places. Show all work and units: 1. Molar mass of Cu Molar Mass of Cl: Molar mass of CuCl If Sarah and Olivia used 2.000 grams CuCla(s) and excess amount of aluminum, what's the theoretical yield of copper according to Equation 1? Show all work. 2. If they actually collected 0.8177 g copper, what's the percent yield in their expertment? 3. 2 Lab Procedure Be sure to record both observations and numerical values in your notebook during the experiment. Review the accompanying final lab submission so that you know exactly what data you will need to collect as part of this lab. In you notebook, prepare a table for all the experiment data. 1 docx-Word

Answer 1

C3.51 amu atomic mam of Cu 4. omic man of ci 35. 45 amu AOmola mam of Cucl2 3.54 + (35.15 x2) g/mo 134.44 mo 3.54 g/mo molar mam of Cu 35.45 g/mol malau m o c 34 44 1ma l mola mam of Cucl2 2. when cucl xoct with excem ate aeminiunm t prduce cappec dunt 2 aluminium chlorude 2A 3 CuCl2 - 30u + 2A1GI 2 9m 134 44 mo Now 2.000 qm CuCI2 Cucl2 o.014 mol cuci2 3 mo cuci prroduced mol cu 3 ma cu 3mol Cucl2 mol cu x O.014 maleuclz maletl2 o D14 LA o o14 mol cu Now O O14 mal cu G3.54 9mol cu C.O14 mol cu 0.88959 Cu of cap per in o-8895 The theoetical yield 3 actuall o.87T 9 cuppa coppen. in collected. e perimentai yield theoruitical yield per cont yield v = MON Q.81TT x loo 91-37 peccent yietd of their ex.perimend in 99