Using the Iodine clock method to find the order of a reaction Introduction When peroxodisulfate (VI) ions and iodide ions react together in solution they form sulfate (VI) ions and iodide. This reaction is shown below: S2O82-aq+ 2I-aq SO42-aq+ I2(aq) The reactants and the sulfate (VI) ions are colourless however the Iodine is a yellow/brown colour. This allows you to measure the progress of the reaction through the colour change when the iodine is produced. In order to determine the order of
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Course Code ACT003 LINGNAN INSTITUTE OF FURTHER EDUCATION REGISTRY FINALIZED EXAMINATION TIMETABLE - 1ST TERM‚ 2012-2013 Course Title Introduction to Accounting CRN 2425 2428 2430 2932 3028 3031 3035 3036 3039 3045 3133 3137 3141 3144 2432 2437 3040 2438 2440 3047 2635 2642 3168 2442 3056 3060 3132 3134 2443 2446 3067 2439 3127 2449 2452 3071 3121 2454 2458 2461 2469 2470 2535 2548 2596 2608 2613 2806 2823 2926 2940 2946 2953 2962 2973 2980 2984 3095 3098 3101 3104 3107 3110 3112 3115 3180
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has reacted with the thiosulphate solution‚ the dark blue colour will disappear. So‚ the end point of the titration is when the dark blue colour disappears. Iodine is usually dissolved in water by adding an excess of KI so that KI3 which has similar properties to iodine is formed. I2 + KI I3- + 2e KI3 3I- Oxidising agents used other than thiosulphate are iron (II) salts‚ arsenic III oxide‚ sulphur dioxide and stibium (III) oxide. The
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bed slowly‚ testing out my strength. I was weak. I barely had any Ki left in me but it wasn’t as bad as I thought it would be. The covers slipped off as I sat up and my hair fell to the front‚ sliding down my neck. Eh? My hair…?
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to oil not mixing with water‚ the colors didn’t initially mix but were segregated. The yellow color eventually won out and it slowly turned very pale. F. NaOCl + KI C3 The reaction turned brown‚ but slowly lightened to a tan color. with 1 drop of starch C3 The reaction turned black immediately when adding the drop of starch. G. KI + Pb(NO3)2 E3 The chemical combination turned the mixture a bright yellow that looked thick and cloudy. The precipitate was yellow at the bottom of the well plate
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two drops of Blue Dye was combined with two drops of NaOCl. The results were observed and recorded. In column 1 row F; two drops of KI was combined with two drops of Pb(NO3)2. The results were observed and recorded. Then one drop of well shaken starch was added to the NaOCl and Kl and those results were observed and recorded. In column 1 row G; two drops of KI were combined with two drops of Pb(NO3)2. The results were observed and recorded. In column 1 row H; two drops of NaOH was combined
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frequency and tie-line power deviations in the three areas in case of any load disturbance in any area. This is achieved conventionally with the help of a suitable integral control action. The supplementary control of the ith area with integral gain Ki is therefore made to act on ACEi given by (1) which is an input signal to the controller
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Aslam o aliekum every one! Maheen: good morning lovely audience out there! Saman: I hope you guys are enjoying THIS COLORFUL EVENT! As salman has aready told we’re here to carry on the rest of the event! AHMED ABDULLAH Maheen: we all know larko ki cricket team main aik esa student hai‚ who is very very very obedient in class‚ and you can actually see the respect for the teachers in his eyes! Saman: the next title is for one that person who himself sets an admiring example Maheen: lets welcome
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