# General Chemistry II Resources

## Lab Report Samples

Below are examples of sections from various labs. They are to be used as a reference for writing your own thorough lab reports. I have tried to keep these as short as possible. Some of these are from actual lab reports turned in by students; some are of my own writing.

### Introduction

We experimentally measured the charge of an electron using electrolysis of copper. This value is related to Faraday's constant, which provides the charge per mole of electrons. A cell was constructed with the same half-reaction ($$Cu^{2+}_{(aq)} + 2e^- \rightarrow Cu_{(s)}$$) occuring in opposite directions. By measuring current and the duration of electrolysis we were able to calculate the total charge transferred ($$Q$$). We determined the total number of electrons stoichiometrically by massing the copper electrodes before and after. These data were then combined to find the average charge of an electron ($$e$$): $$e = \frac{Q}{N_e} = \frac{It}{2n_{Cu}N_a}$$

#### Key Points

• Lists the objective of the experiment
• Provides the balanced reactions
• Provides of short summary of the thought process involved
• Lists relevant equations