Day 2 - Trial 2

10/4/13

After experimenting, we found the need to increase the rate of electricity produced by the bacteria, so we changed one factor: The Volume of Sodium Chloride solution.

Instead of pouring 200ml of NaCl solution, we used only 150ml of NaCl solution.

In Trial 2, we have obtained a significant change in results -- The rate of production was increased drastically.

Fig. 5 below shows the tabulated results:

Fig 5

As compared with Fig 4, the graph in Fig 6 has a faster, smoother increase, with less fluctuation than in the first trial:

Fig 6

Observations: With the decrease of the volume of the NaCl solution, the rate of the generation of electricity increases.