What oxidation changes does the iron undergo? Write the corresponding balanced h
ID: 525955 • Letter: W
Question
What oxidation changes does the iron undergo? Write the corresponding balanced half-reaction.
Discuss your color change observations. How can this data be explained in light of what is happening in this experiment?
Discuss your temperature data for this reaction. How can this data be explained in light of what is happening in this experiment?
Write the balanced reaction for an oxidation-reduction reaction that happens in everyday life.
Oxidation of Fe2+to Fe3+ 9. Measure and pour 150mL of 3% hydrogen peroxide (H202 into the clean 600mL beaker. 10. Use a weigh boat and scale to measure and transfer approximately 3g cream of tartar (KC4H50e) into the 600mL beaker 11. Stir the solution with the stir rod until the cream of tartar is evenly distributed throughout the hydrogen peroxide 12. Place the thermometer in the iron acetate solution in the flask and record the initial temperature (Time 0) in Table 3 13. Observe and record the color of the iron acetate solution (prepared in Part 1) in Table 3. (1g of steel wool & 4.5% Acetic Acid, C2H40) 14. Add 15 mL of the iron acetate solution from the flask to the 600 mL beaker. Record the temperature and color of the solution in Table 3 every ten seconds for two minutes; or, until you see a color change take place. You will see a marked increase in temperature as the reaction proceeds. Gently stir the solution as the reaction proceeds. Bubbles should form as carbon dioxide is releasedExplanation / Answer
On oxidation Fe2+ is oxidised to Fe3+.
Oxidation is loss of election.
Reaction is Fe2+ => Fe3+ + e-
b)
As the reaction proceeds color changes from cloudy to brown to yellow. Cream of tartar reacts with hydrogen peroxide to give CO2 and OH - ions. Afterwards only the iron acetate (||) remains which is brownish in color. When iron is oxidised it changes color to yellow.
Temperature increased steadily. We can safely say that this reaction is exothermic.
Everyday redox reaction is rusting of iron
4Fe + 3O2 => 2Fe2O3
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