РефератыИностранный языкCoCopperSilver Lab Essay Research Paper Gayle AdkinsonDirector

CopperSilver Lab Essay Research Paper Gayle AdkinsonDirector

Copper/Silver Lab Essay, Research Paper


Gayle Adkinson


Director of Operations


Adkinson Chemical Corporation


Dear Mrs. Adkinson:


A sample of copper has been produced as requested. We are pleased to report that the


most copper has been produced through the most efficient method. But we regrettably to


report that an accident had occurred during the process (which you will not be billed for).


This accident led to a series of investigations to weed out incompetent workers. The


remaining technicians were the best and most capable of producing the highest purity of


copper at the minimum cost. Captain Copper Chemical Corporation supplies


application-specific process chemicals for most of the science industry. The combination


of high technology products and in-depth support, from the technical service team, allows


the customer to maximize productivity and minimize cost. Captain Copper Chemical


Corporation is a technology-driven, not marketing-driven company. We pride ourselves


on our capacity to solve client?s chemical process issues, and will develop custom


products, when required. Captain Copper Corporation is currently both the leading North


American distributor of chemicals and a world leader in manufacturing a variety of


chemical specialties. In locations throughout the world, you?ll find Captain Copper


Chemical Corporation operations upholding standards that keep safety, health and


environmental considerations a top priority. OSHA has deemed the CCCC of using safe


techniques and proper disposal of wastes. CCCC strives to be the most dependable


supplier of high-quality goods and services for our important constituents. CCCC is


dedicated into achieving mutually profitable relationships with our customers and suppliers


by providing quality products and services, on time and consistently, and by remaining


constantly aware of changing customer needs. Captain Chemical Corporation invites you


to share your chemical process problems, and issues, so that we may offer and


demonstrate our capacity to assist you in becoming the leader in your industry.


Procedure


Day 1


1.Determine limiting reactant


2. Prepare a data table with the following: mass of- beaker A, beaker B, beaker A +


CuSO4 . 5H2O, beaker B + Fe, CuSO4 . 5H2O , Fe, filter paper, beaker B + filter


paper + Cu, Cu, and observations


3.Clean and dry two 250 mL beakers. Label one A and the other B. Mass each


beaker. Record results in data table


4.Purchase 10g of CuSO4 . 5H2O and 2.22g of Fe (less than needed to make sure all


/>

Fe reacts). Place CuSO4 . 5H2O in beaker A and Fe in beaker B. Mass each


beaker. Record results in data table


5.Dissolve CuSO4 . 5H2O (Dr. Merck informed us that CuSO4 . 5H2O was soluble)


6.Heat beaker A (w/ CuSO4 . 5H2O (aq)). Heat until solution is hot but not boiling.


7.Remove beaker A from hot plate using beaker tongs and pour CuSO4 . 5H2O (aq)


into beaker A and let CuSO4 . 5H2O react with Fe


8.Let the chemicals react. Done for the day.


Day 2


9.Make observations of solution and precipitate.


10.Setup to filter solution. Set ring stand with funnel. Mass filter paper. Record


results in data table. Fold filter paper and set it up in funnel. Wet filter paper to


remove all space between filter paper and funnel.


11.Decant solution and filter into beaker A using stirring rod. Rinse precipitate (Cu)


with distilled water. Filter solution again. Do this about three times.


12.Dispose of filtrate (FeSO4). Place filter paper into beaker B with precipitate. Dry


beaker B. Done for the day.


Day 3


13.Make observations of copper. Scrape any remaining copper on filter paper into


beaker. Mass the copper and record results into data table (Dr. Merck


recommends removing all iron impurities with a magnet)


Data Table


The following calculations were made prior to the lab for limiting reactant determination


to make efficient use of all materials.


molar mass of CuSO4 . 5H2O = 63.5g Cu + 32.1g S + 144.0g O + 10.1g H = 249.7g


molar mass of Fe = 55.8g


molar mass of FeSO4 = 55.8g Fe + 32.1g S + 64.0g O = 151.9g FeSO4


molar mass of Cu = 63.5g Cu


mols of 10g CuSO4 . 5H2O


= 0.040048058 mols of CuSO4 . 5H2O


mols of 10g Fe


= 0.17921147


mols of Fe needed if 10g CuSO4 . 5H2O


mols of CuSO4 . 5H2O if 10g Fe


mass of Fe needed if 10g of CuSO4 . 5H2O is used:


= 2.234681618g Fe = 2.23g Fe


mass of CuSO4 . 5H2O needed if 10g of Fe is used:


= 44.74910394g CuSO4 = 44.7g


CuSO4


* mass of CuSO4 . 5H2O


CuSO4 . 5H2O is the limiting reactant.


mass of Cu expected to be produced from 2.22g of Fe:


= 2.526344086g Cu = 2.53g Cu


The following calculation was made after the lab for percent yield determination:


2.50g Cu (actual mass)


2.53 g Cu (theoretical mass) x 100 = 98.8142292% = 99%


99% of the theoretical mass of copper to be produced was retrieved.


Materials


CuSO4 . 5H2O.5 grams = $.5010g = $10.00


Fe.5 grams = $1.002.22g x 2= $8.88


Total$18.88

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