How to get mole of Cl in copper chloride? Datamass of copper chloridein 25.0 mL of solution, ginitial mass of Zn, gmass of Zn afterreaction, gmass of Zn reacted, gfiltermass of wax paper, g0.298mass of wax paper + Glass dish : 50.572Cu, gafter 5 min. on51.686Büchner funnel, g51.684 after additional 5min. on bench, g51.674 after another 5 min.on bench, gmass of Cu produced, gmass of Cl in copperchloride, gmoles of Cu in copperchloride, molmoles of Cl in copperchloride, mol2.021 g1.63690.6859empirical formula ofcopper chloride0.8160.8140.804SectionCalculation:Mass of Cu:Mass of Cl:Chem 1083-07Moles of Cu:Moles of CI:-39-Empirical Formula: 2. Obtain a flat piece of clean Zn, determine itsmass, and record it. If it is covered withplastic, remove it before weighing. The massof Zn should be between 1.5 and 2.0 g.3.Use forceps or crucible tongs to pick up thepiece of Zn Tilt the reaction beaker to a 45-degree angle. Release the Zn so that it slowlyslides down the side of the beaker into thesolution. Make sure that none of the solutionsplashes out of the beaker.4. Continuously scrape the surface of the Znpiece in the reaction beaker with a clean,glass-stirring rod, so that the freshly formedsolid Cu will not be able to adhere to thesurface of Zn.5. Allow the reaction to continue until the bluecolor has disappeared from the solution (about10-15 min.). Then, add 5 to 10 drops of 10%aqueous hydrochloric acid to the solution, andthoroughly stir. This will remove very fineparticles of Cu and facilitate the filtrationprocess.6. Remove the remaining Zn from the solution,using your crucible tongs. Transfer the Znpiece to a 50 mL beaker containing 5-7 mL ofdistilled water. Scrape off any adhering Cuand remove the cleaned Zn from the beaker.Repeat as necessary. Return all scraped offCu, including water, to the reaction beaker.Dry the remaining Zn with a paper towel orother absorbent paper. Determine the mass ofthe Zn remaining.7. Discard this Zn in the container labeled"Discarded Zn Residue."8. Carefully decant into a 150 mL beaker thesupernatant liquid (the aqueous solution inthe beaker) from the solid Cu, without losingany of the metal. Discard the supernatantliquid in the container labeled, "Discarded ZnSolutions."9. Set up the vacuum filtration apparatus (Figure5.1), if it is not already set up for you.10. Place a circular filter paper covering all theholes in the Büchner funnel. Moisten the filterpaper with small amount of distilled water froma wash bottle. Some liquid should bepresent in the Büchner funnel throughoutthe filtration to ensure a good seal betweenthe filter paper and the funnel.-36-11. Add 10 mL of distilled water to the reactionbeaker. Transfer the water/Cu into a Büchnerfunnel installed onto a vacuum flask. Wash offthe remaining Cu specks using a wash bottlefilled with distilled water until all visible tracesof Cu are transferred from the beaker into thefunnel.Buchner funnelstoppertapedfilterflaskwateraspiratorFigure 5.1 Suction filtration apparatus12. Place a large beaker in the sink under theaspirator to prevent splattering, then turn onthe aspirator to start filtering. You may have topress the funnel onto the filter flask to developgood vacuum. If there are any lumps, breakthem up using a stirring rod. Make sure all thewater passed through the filter paper.13. Wash the Cu with about 10 mL of acetone 3times. Leave the aspirator running for 5minutes to dry the Cu completely.14. Release the vacuum by carefully twisting thefunnel and removing it from the assembly.Turn off the tap.15. Transfer the Cu onto a wax paper anddetermine the weight of the wax paper and Cu.Record the mass of Cu.16. Leave the Cu on your bench top for another 5minutes. Determine the weight of the waxpaper and Cu again. This should be within0.05 g of the first determination. (Step 15). Ifnot, repeat this step until the last two readingsagree within 0.05 g. Record the weight.17. Discard the Cu residue in the container labeled"Discarded Cu Residue."Caution: Wash your hands thoroughly withsoap or detergent before leaving the laboratory.

Mass of copper chloride taken for analysis = 2.021 g The mass of copper(Cu) produced is equal to…

Answered: Data mass of copper chloride in 25.0 mL…

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...