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Ying (Alan) Sun
111607
Lab #6: Determination of an Equilibrium Constant using a Spectrophotometer
Discussion:
This experiment required a lot less actual experimentation and focused more heavily on
observations and calculations. The sample solutions were already prepared for u so I would've assumed
that everyone would have similar results with less chances for errors (although I did find a major one)
to occur. All that was required of us for data collection was calibrating the spectrophotometer, and then
placing cuvettes of solution into the spectrophotometer and reading the absorption. The tricky part was
calculations.
The main point of this lab is to prove that the K, the equilibrium constant is just that, constant. I
found that the average K constant to be 1706 with a standard deviation of 127.85. With no ideal K
constant given to us, it is unknown whether this was an accurate result, but the fact that there was an
overwhelming average deviation of 127.85 from mean shows that if the solutions and
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This note was uploaded on 04/28/2009 for the course CHEM 1AL taught by Professor Hooker during the Fall '07 term at UCSB.
 Fall '07
 Hooker
 Chemistry, Equilibrium, pH

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