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Clock Lab (Concentration of Reactant vs. Reaction Rate)
1. For this lab, what is the physical observation that determines rate of reaction?
2. Explain how this physical observation relates to the products make? Is it a direct (inverse) proportion?
3. What were the results of the experiment? Did the results support what you learned in lecture about the effect of increase reactant concentration on rate of chemical reactions. Explain.
4. With increasing concentration of reactant, the rate of reaction _____________________ . Explain (how do we say it in lecture notes).
5. From the pre-lab discussions and in your own words, what was the slow step (called rate determining step(s)) and fast step in this reaction? How did it influence what you did in the lab?2019-2020 Student do not answer this question. Instead write the 3 reaction mechanism steps for this reaction in the space below.)