Lab 10 Behavior of Copper in a Solution of Silver Nitrate

Lab 10 Behavior of Copper in a Solution of Silver Nitrate -...

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4.4 LAB #10 Behavior of Copper in a Solution of Silver Nitrate Jennie Chang (even) Allison Yee (odd-Partner) Mackenzy Doniak (even-Partner) January 14, 2011 CALCULATIONS
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1. Calculate the number of moles of Cu that reacted and entered the solution. (1.48 g of Cu) /1 x (1 mol / 63.5 g of Cu) = .023 moles of Cu that reacted and entered the solution 2. Calculate the number of moles of Ag formed. (.64 g Ag/1) x (1 mol/ 108 g Ag) = .01 moles of Ag formed 3. Determine the ratio, mole Ag/ mole Cu. .023 moles of Cu/ .01 moles of Ag 4. Determine and write a balanced equation for this reaction. (Single displacement, Copper(II) ) Cu+ AgNO3 Ag + Cu(NO3)2 Cu + 2gNO3 2Ag + Cu(NO3)2 5. What is the ratio, moles Ag/moles Cu according to the balanced equation. (2 g Ag/1) x (1 mol/ 214Ag) = .01 moles of Ag (1 g Cu/1) x (1 mol/63.5 g Cu) = .023 moles of Cu 6. Calculate the % error. Equation: True Value – Experimental Value / True Value × 100 = Percent Error [(.01/.023)-(.01/.023)]/ (-.013) x 100 = 0% DISCUSSION
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Unformatted text preview: This lab was fairly easy. It was a three-day part lab. All we really had to do was mass objects and observe. However, there were a few sources of error. 1) While decanting the silver, we lost some of the silver. A possible solution to this would be to have a small filter that would only allow the water to pour out. 2) Another possible error could have been massing it. The electronic device itself may not always be the most reliable. A possible solution to this would be to use a triple beam balance and mass it that way. 3) A third source of error could be the calculations. During this lab, we always rounded to the tenths place, and as you keep rounding, you are getting less and less exact with the most accurate answer. A solution to this would be to not round. CONCLUSION In this lab, I learned to observe the reaction of a weighed quantity of copper wire with a solution of silver nitrate. I figured out the moles of silver and copper and compared them to each other....
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This note was uploaded on 01/09/2012 for the course SCIENCE 101 taught by Professor Stevens during the Spring '10 term at Aachen University of Applied Sciences.

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Lab 10 Behavior of Copper in a Solution of Silver Nitrate -...

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