Gen Chem Lab 1 Upenn

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July 14, 2011

Experiment 1

Partners: Rob and Julian

Transition Metal Synthesis

Report

Part A:

Table 1. Summary of synthesis data and results.

|Desired Product |CuIBpy |(CuI)2Bpy |

|Mass of CuI (g) |0.252 |0.252 |

|Mass of Bpy (g) |0.409 |0.068 |

|Experimental Yield (g) |0.437 |0.204 |

|Color |Red |Yellow |

|Theoretical Yield (g) |0.455 |0.234 |

|% Yield |96.04% |87.23% |

Observations/Notes:

The red product, synthesized by Rob and I was the thermodynamic product. This formed rather slowly. It began as a pale orange and over a ten-minute period it slowly turned a rich red. The yellow product synthesized by Julian was the kinetic product and formed rather quickly.

Part B:

Table 2. Absorbance data for the standards.

|Solution |Abs |Conc. (M) |

|A |0.049 |0.002 |

|B |0.134 |0.004 |

|C |0.314 |0.008 |

|D |0.411 |0.010 |

Equation for the line of your standard graph:

[pic]

Table 3. Concentrations and Mass % of Copper(II) in samples.

Product |Mass of Sample (g) |Abs |Cu2+ (mol/L) |Cu2+ in sample (moles) |Cu2+ in sample (grams)...