Redox titration lab report

Knowing the volume of the KMnO4 solution required to reach the endpoint enables you to calculate the number of moles of iron present in each sample and the mass of iron II present in each sample. Data Here is some sample data that we will use for the sample calculations:

Redox titration lab report

The equivalence point is reached when the total number of electrons lost in the oxidation reaction is equal to the total number of electrons gained in the reduction reaction. In this experiment, a purple-colored solution of potassium permanganate, with an approximate concentration of 0.

A few drops of concentrated phosphoric acid can be added to form a complex with the iron and minimize this color.

Redox Titration of Vitamin C Lab Report by on Prezi

Sulfuric acid is added to increase the concentration of hydrogen ions in the solution. Safety Potassium permanganate and sulfuric acid can cause chemical burns. The KMnO4 will stain skin and clothing.

Avoid skin contact with these chemicals. Rinse a clean a buret several times with a few mL of distilled water. Rinse the buret with a few mL of the potassium permanganate and discard the washings into a waste beaker.

Fill the buret and tip with the KMnO4. Use a clean Erlenmeyer for the titration.

Redox titration lab report

Transfer the FeSO4 to the Erlenmeyer flask. Place about 50 mL of water in a beaker and add 1 drop of the permanganate solution.

This is the color standard for the reaction. When the equivalence point is reached, the color intensity of the mixture should match this standard. Add the permanganate to the FeSO4 solution in the Erlenmeyer flask until the equivalence point is reached.

Record the final volume reading in the buret. Repeat the titration process.

Titration screen experiment

Wash the mixtures in the flasks down the drain, then, rinse the flasks with distilled water. If not, do another trial and consult with the instructor. Enter your data from each trial into the spreadsheet to share with the rest of the class. Conclusion If your endpoint was too dark in color, how would this affect the calculated concentration of the potassium permanganate?Report 4 Redox Titration The purpose of the experiment was to use the permanganate ion, a strong oxidizingagent, in a titration in order to determine the concentration of a FeSO 4 solution by rodneyperu.


Redox titration determines the concentration of an unknown solution (analyte) that contains an oxidizing or reducing agent. Not all titrations require an external indicator.

Some titrants can serve as their own indicators, such as when potassium permanganate is titrated against a colorless analyte. One way to determine the amount of vitamin C in food is to use a redox titration. The redox reaction is better than an acid-base titration since there are additional acids in a juice, but few of them interfere with the oxidation of ascorbic acid by iodine.


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The reduction of permanganate requires strong acidic conditions. In this experiment, permanganate will be reduced by oxalate, C 2 O 4 2-in acidic conditions.

Oxalate reacts Using the half-reaction method, write a balanced redox equation for the reaction of permanganate. Determination of Iron Ore by Redox Titration If the indicator reaction is reversible, the Nernst equation applies.

E = E˚ + log {[Inox]/[Inred]} (4) The color change is observed when the titration mixture goes from one containing mostly.

Experiment 16 Help!!!