ng c. Sample Data Table Drops of Stock Solutions Times Run # KMnO4 H20 HS04 C20t
ID: 572852 • Letter: N
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ng c. Sample Data Table Drops of Stock Solutions Times Run # KMnO4 H20 HS04 C20th Temp Starting Ending Total 1E 15 10 15 40-50C 2E 15 10 15 5 40-5orc Results (20 pts) The answers to these questions should be included in your results section. However, this should be ics lure written as a discussion in paragraph form not simply as a list of answers. Be sure to use your Offer explanations for the observations in "1. Watching the Reaction". Did all runs show a change? . What effect does increasing the concentration of H ion have on the rate of the reaction? Use If not, why not? Did those that changed do so instantly? If not, why not? (4 pts) your data to support your answer. Does this seem reasonable? Explain your reasoning in terms of what the molecules and ions may be doing. (4 pts) What effect does increasing the concentration of oxalic acid have on the rate of the reaction? Use your data to support your answer. Does this seem reasonable? Explain your reasoning in terms of what the molecules and ions may be doing. (4 pts) What effect does the presence and amount of Cu metal have on the rate of the reaction? Use your data to support your of what the molecules and ions may be doing. (4 pts) What effect does increasing the temperature have on the rate of the reaction? Use you support your answer. Does this seem reasonable? Explain your molecules and ions may be doing. (4 pts) is. r answer. Does this seem reasonable? Explain your reasoning in terms r data to reasoning in terms of what the . Conclusion (10 pts) The conclusion should be a short (5-10 sentences) paragraph that answers the objective of the other words, for this experiment, the conclusion should summarize the following The factors that can be used to change the rate of this redox reaction. Which factors are more effective? Which are less effective? Explain your reasoning. Could some or all the factors you found to affect the reaction rate have been predicted from knowing only the overall reaction? Explain your reasoning . rin References Abraham, M. R.; Pavelich, M. J. Kinetic Factors - Exp. K-1. Inquiries Into Chemistry, 3'd ed.; Waveland Press: Long Grove, IL, 1999; pp 199-202. 1: Kinetic FactorsExplanation / Answer
1) There is reaction between KMnO4 and water it gives purple color of permangnate ions.Also there is reaction between KMnO4 and H2SO4 it will give dark red color which after sometime converts into brown color. From all the reactants given reaction is possible, as oxalic acid react with KMnO4 and gives orange color and it requires acidic medium to occur so sulphuric acid is necessary and it releases hydrogen ion.
2) In this reaction, oxalic acid get oxidised and pottasium permangnate reduced. An acidic solution is necessary because the redox reaction consumes H+ ion.
MnO-4 + (C2O4)2- ------------> Mn2+ + CO2 (acidic medium)
There are too many oxygens on the left side, that's why acid comes in. The extra hydrogen react with extra oxygen in the permanganate to produce water. On increasing the concentration of hydrogen ion it will increase rate of reaction.
3) On increasing the concentration of oxalic acid, does not affect the rate of reaction.
4) On increasing the temperature of the reaction , increases the rate of reaction. As on increasing the temperature, solublity of permangante ions increases so it will increases the formation of permangnate ions which will increase the rate of reaction.
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