Question

A.) If the molarity of the EDTA solution was higher than what was labeled on the container in the lab, describe the effect on the number of moles of zinc determined.

Option 1: The number of moles of zinc determined would decrease.
Option 2: The number of moles of zinc determined would increase.
Option 3: The molarity of the EDTA solution does not affect the number of moles of zinc determined.
Option 4: The number of moles of zinc determined would remain constant.

b.) If the molarity of the EDTA solution was higher than what was labeled on the container in the lab, describe the effect on the number of moles of chloride determined.

Option 1: The number of moles of chloride determined would decrease.
Option 2: The number of moles of chloride determined would increase.
Option 3: The molarity of the EDTA solution does not affect the number of moles of chloride determined.
Option 4: The number of moles of chloride determined would remain constant.

Answer 1

If the molarity of the EDTA solution is higher than what was labeled, it affects the number of moles of zinc and chloride determined in the lab. The number of moles of zinc would decrease, while the number of moles of chloride would increase.

Step-by-step explanation:

The molarity of the EDTA solution affects the number of moles of zinc and chloride determined in the lab.

a.) Number of moles of zinc determined:

If the molarity of the EDTA solution is higher than what was labeled, the number of moles of zinc determined would decrease.

The higher molarity of the EDTA solution means that there is a higher concentration of the chelating agent EDTA available to bind with the zinc ions. This results in more zinc ions being complexed by the EDTA and fewer zinc ions being available to react with any other reagents or indicators used in the determination of zinc.

b.) Number of moles of chloride determined:

If the molarity of the EDTA solution is higher than what was labeled, the number of moles of chloride determined would increase.

Again, the higher molarity of the EDTA solution results in a higher concentration of EDTA available to bind with the chloride ions. This causes more chloride ions to be complexed by the EDTA and more moles of chloride to be determined in the analysis.