lab report for reeduction lab

lab report for reeduction lab - Andy Lindberg Acl07 CHM1045...

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+ Andy Lindberg Acl07 CHM1045 section 23 Date performed: 10/3/07 Date turned in: 10/10/07 TA: Rabbih Makki
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Purpose: This experiment is the culminating experiment for all these weeks of stoichiometric explorations. In our last experiment we explored a 1:1 reaction between sodium bicarbonate and carbon dioxide, that is to say that for every one mole of sodium bicarbonate that reacted, one mole of carbon dioxide was formed. 1:1 reactions are very simple mathematically and thus a good starting point for stoichiometric investigations. In this lab experiment we expand our knowledge by working with a non-one to one reaction involving copper (II) nitrate and potassium iodide. In addition to stretching our ability to calculate product and reactant amounts using reaction stoichiometry, we will also be exploring the concept of the limiting and excess reagents. It is not always obvious from gram amounts which reactant will run out first when a reaction is run. Procedure: 1. Get out 6 small test tubes, clamps 2. Use marker to label the test tubes 1,2,1a,1b,2a,2b 3. Clean and weigh tubes 1 and 2 4. Add the assigned amount of copper nitrate to the assigned volume of KI in tubes 1 and 3 5. Put the tubes in the test tube rack for 5 min. 6. Centrifuge the test tubes to collect the solid for 5 min. 7. Get 2 pipettes and put a bulb on the top to remove the liquid from the tubes 8. Split the liquid from 1 into 1a and 1b split 2 into 2a and 2b 9. put 3 mL of methanol into tubes 1 and 2 and centrifuge for 5 more minutes
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lab report for reeduction lab - Andy Lindberg Acl07 CHM1045...

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