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The Hong Kong Polytechnic University Bsc(Hons) in Chemical Technology Chemistry Laboratory III Laboratory Report Inorganic Chemistry Experiment 6 Title: Analyzing First Order Kinetics - cis-trans isomerization of mercury dithizonate Name: KO KA LEE Student ID: 02183698D Class: 12047-2 Aim: The purpose of this experiment is to analyze first-order kinetics and rate constant by using four general methods: 1. Half-time method 2. Semi-log method 3. Guggenhein's method 4. R/R? method (ratios of rates). Results and Data Treatment: Half-time Method From the data obtained (Appendix 1), a graph of absorbance Y(t) against time is plotted. Graph 1 For 1st order kinetics, t = t1/2 y t1/2 = (y0 + y? ) / 2 From the data, y0 = 0.2969208 y? = 0 y t1/2 = (0.2969208 + 0) / 2 = 0.1484604 From Graph 1, At absorbance 0.1484604, t1/2 = 21.5s By kobs = ln2 / t1/2 , kobs = ln2/ 21.5 = 0.0322 s-1 Semi-log Method A graph of Z(t) = ln[yt-y?] against time is plotted. (The value of ln[yt-y?] refer to Appendix 3) Graph 2 From the equation, y=...

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