the objective of the redox chemistry experiment is to use a redox titration to determine the percent by mass of oxalate ion in the iron salt and of sodium oxalate in an unknown. the oxalate ion is oxidized by permanganate ion from the potassium permanganate titrant that has been standardized using very pure sodium oxalate. very pure sodium oxalate (primary standard) samples are titrated to standardize the potassium permanganate solution. this experiment is the most dangerous you will do in chm152l. wear goggles at all times while in the lab. for your own safety you will be asked to leave the lab for not wearing goggles. wearing gloves and a lab apron is also required and, of course, wear good footwear for working with corrosive chemicals! good luck! indicate either true or false for the following statements: gloves and lab apron are optional for this experiment. true false the percent by mass of sodium oxalate in the iron salt is determined in this experiment. true false you will be removed from lab for not wearing goggles. true false redox titration is used to determine the percent by mass of sodium oxalate in an unknown. true false oxalate ion is oxidized by permanganate ion in this experiment. true false very pure sodium oxalate is a primary standard for this experiment. true false

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malissaellison299 malissaellison299

04-11-2022
Chemistry

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the objective of the redox chemistry experiment is to use a redox titration to determine the percent by mass of oxalate ion in the iron salt and of sodium oxalate in an unknown. the oxalate ion is oxidized by permanganate ion from the potassium permanganate titrant that has been standardized using very pure sodium oxalate. very pure sodium oxalate (primary standard) samples are titrated to standardize the potassium permanganate solution. this experiment is the most dangerous you will do in chm152l. wear goggles at all times while in the lab. for your own safety you will be asked to leave the lab for not wearing goggles. wearing gloves and a lab apron is also required and, of course, wear good footwear for working with corrosive chemicals! good luck! indicate either true or false for the following statements: gloves and lab apron are optional for this experiment. true false the percent by mass of sodium oxalate in the iron salt is determined in this experiment. true false you will be removed from lab for not wearing goggles. true false redox titration is used to determine the percent by mass of sodium oxalate in an unknown. true false oxalate ion is oxidized by permanganate ion in this experiment. true false very pure sodium oxalate is a primary standard for this experiment. true false

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contexto1005 contexto1005 · Answer 1 · 2022-11-08T09:18:16-05:00

The statements that are true are:

1.The percent by mass of sodium oxalate in the iron salt is determined in this experiment.

2.You will be removed from lab for not wearing goggles.

3.Redox titration is used to determine the percent by mass of sodium oxalate in an unknown.

4.Oxalate ion is oxidized by permanganate ion in this experiment.

5.Very pure sodium oxalate is a primary standard for this experiment.

In the titration, the sodium oxalate is being oxidized by the permanganate ion. The permanganate ion is acting as the oxidizing agent, and the sodium oxalate is the reducing agent. The reaction is taking place in an acidic solution, which is necessary for the permanganate ion to be active. The endpoint of the titration is when the permanganate ion is no longer able to oxidize the sodium oxalate. At this point, the solution will be a pale pink color. The amount of permanganate ion that is required to reach the endpoint is a measure of the amount of sodium oxalate present in the solution.

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