Equivalence Point Lab Report
Raghed Odeh
Chem 227
11/01/2017
Using Conductivity to Find an Equivalence Point
Provide a brief statement of the purpose of this activity. Be sure to define equivalence point. Explain conductivity and the idea behind why conductivity can be used in determining the equivalence point in a titration.
The purpose of this experiment was to use the conductivity to find the equivalence point. The equivalence point is the point in a titration where the amount of titrant added is enough to completely neutralize the analyte solution. The moles of titrant is equal the moles of the solution with unknown concentration. Conductivity can be used to determine the equivalence point in titration because when the precipitation forms, there will no longer …show more content…
The conductivity doesn’t go to zero because there will be ions in any solution no matter what. Not even pure water has zero ions. Thus, any solution will always contain some amount of ions regardless of the quantity.
Of the two methods used for determining the equivalence point, which seemed to be more accurate? Provide reasoning and data that support your response.
Of the two methods used, the graph seems to have a more accurate answer for determining the equivalence point. When the equivalence point was determined using the conversion method, there were a lot of rounding numbers. However, using the graph gives you a better representation of the answer because there weren’t any rounding errors carried from the first step to the end. On the other hand, there are limitations to the second method because some of the probes didn’t give the correct conductivity. Also, there may have been human errors when pressing on the keep button. In order to get the accurate conductivity number, the recorders had to wait for a while until the conductivity number settles to a range where there isn’t a substantial change in the
Chem 227
11/01/2017
Using Conductivity to Find an Equivalence Point
Provide a brief statement of the purpose of this activity. Be sure to define equivalence point. Explain conductivity and the idea behind why conductivity can be used in determining the equivalence point in a titration.
The purpose of this experiment was to use the conductivity to find the equivalence point. The equivalence point is the point in a titration where the amount of titrant added is enough to completely neutralize the analyte solution. The moles of titrant is equal the moles of the solution with unknown concentration. Conductivity can be used to determine the equivalence point in titration because when the precipitation forms, there will no longer …show more content…
The conductivity doesn’t go to zero because there will be ions in any solution no matter what. Not even pure water has zero ions. Thus, any solution will always contain some amount of ions regardless of the quantity.
Of the two methods used for determining the equivalence point, which seemed to be more accurate? Provide reasoning and data that support your response.
Of the two methods used, the graph seems to have a more accurate answer for determining the equivalence point. When the equivalence point was determined using the conversion method, there were a lot of rounding numbers. However, using the graph gives you a better representation of the answer because there weren’t any rounding errors carried from the first step to the end. On the other hand, there are limitations to the second method because some of the probes didn’t give the correct conductivity. Also, there may have been human errors when pressing on the keep button. In order to get the accurate conductivity number, the recorders had to wait for a while until the conductivity number settles to a range where there isn’t a substantial change in the