Lab: Limiting Reactant and Percent Yield Assignment: Lab Report Active
100 Points

Explanation:

This report discusses and experiment to study the limiting reactant and percent yield of the elements copper (II) chloride (CuCl2) and aluminum foil (Al), and comparing the theoretical and actual yields and explaining the sources of error. QuestionWhile observing a chemical reaction, how can you tell which reactant is limiting?HypothesisIf a substance is the limiting reactant, then it will be fully consumed by the time the reaction completes because it’s the reactant that reacts completely and the reaction can’t proceed any further.VariablesIndependent Variables: copper (II) chloride and aluminum foil (Al)Dependent Variables: how much aluminum to make reactionControlled Variables: amount of copper (II) chlorideMaterials and ProcedureStep 1: Gather Materials250 mL beaker250 mL ErlenmeyerflaskWash bottleDistilled waterStep 2: Prepare Aqueous Copper (II) Chloride (Trial 1)i.Using a spatula and a balance, measure exactly 2.50 g copper (II) chloride (CuCl2). ii.Put into a 250-mL beaker.iii.Measure 50 mL distilled water in the beaker.iv.Stir the solution gently with the stirring rod to dissolve the copper (II) chloride.

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a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.