Change evaporation to “lots” until you have reduced the water to approximately 0.50 L solution. Observe what happens to the conductivity meter. Answer the questions below.
1. What do you observe about the conductivity meter as water is evaporated?
2. Does this solution conduct electricity better or worse than before the water is evaporated?
1. As water is evaporated, the conductivity meter will indicate a decrease in conductivity. This is because the concentration of ions in the solution is increasing, and therefore, fewer ions are available to carry an electric current.
2. This solution will conduct electricity better before the water is evaporated. This is because the presence of more water allows for more ions to be dissolved, increasing the conductivity of the solution.