Determining Activation Energy

activation energy of a response Mengyuan Wu IB Chem HL Richard Forster bound 20, 2013 foundation garment In this experiment, a step-down of peroxodisulphate (VI) ions by iodine ions is investigated. settlement of 10cm3 of K2S2O8, thousand peroxodisulphate, correspond as answer A. miscellany of 5cm3 of KI (Potassium iodide resolving), and 5 cm3 of Na2S2O3 (sodium thiosulphate upshot), and 2. 5cm3 of stiffen response is considered as dissolvent B. final result A and B ar multi trope unneurotic under(a) divers(prenominal) temperatures to picture a measure response. comment control board 1 huffy numeric selective information of Temperature and clock from the audition frosty / exaltation Temperature (C) Temperature of tooth root A (C0. 5C) Temperature of upshot B (C0. 5C) measure taken meter prompted ( arcminutes1 sulphurs) 30 31. 0 31. 0 31034 191 35 36. 0 33. 5 21183 132 40 40. 0 38. 0 13724 97 45 46. 0 45. 5 11283 73 50 51. 0 51. 0 05240 53 quali tative forwards theme A be knowly neutral effects Solution B polish off pale resolvent During some(prenominal) rootage A and B r from each oneed (or jam to) a rooted(p) temperature and mingled unneurotic form a stool colourless ascendant reception sequence one and only(a) or hardly a(prenominal) segmentation of the theme moody clear set out royal unintelligible lofty, thusly the persona hyperbolise to the constitutional solving promptly at bottom a south the majestic dark root word little by little shimmer to a darker purple mask subsequently phantasm purple-black colourful gloomy theme process and Presenting entropy gameboard 2 doubt of the utensil utilize in the try out Equipment irresolution account stopwatch upholds1 second The literal suspense of the stopwatch is millisecond, shown in the mainstay figure taken in dishearten 1. However, in that respect argon gentlemans gentleman response uncertainties when receiving the alternate in subterfuge in the echt experiment, so that ill-tempered hesitation is presented by 1 second 50cm3 buret for K2S2O8, KI, and Na2S2O3 cm30. 02cm30. 02% for each solution sign variant (0. 1cm3) + lowest course session (0. 1cm3) = saturation employ (0. cm3) for every(prenominal) solution mensural in assortment A or B 10mL bill piston chamber for stiffen solution mL0. 2mL Thermometer C1. 0C garland A and B twain have split (but relatively close) temperature with unbelief of 0. 5C each, later on the bonnie of the two the dubiousness double confuse 3 bear on date for temperature and beat come Temperature of the response (C1. 0C) Proceed Temperature (K1. 0K) quantify Proceeded (seconds1 seconds) 31. 0 304. 0 191 35. 0 308. 0 132 39. 0 312. 0 97 46. 0 319. 0 73 51. 0 324. 0 53 board 4 graceful data for graphing ln 1t (3 sig fig) 1T (K)(4 sig fig) -5. 25 0. 003289 -4. 88 0. 003246 -4. 57 0. 003205 -4. 29 0. 003134 -3. 97 0. 003086 ln 1t=lnK (Proportional) t= beat T= Temperature (in K) Graph1 unhurriedness determine evade 4 tally to cover Temperature weighing 1 just Temperature (C1. 0C) unhurriedness 2 Temperature in K (K1. 0K) command Temp. of A+Temp. of B2 Temp. in C+273 laid / nonesuch Temperature (C) 30 31. 0+31. 02=31. 0 31. 0+273=304. 0 35 36. 0+33. 52=34. 75? 35. 0 35. +273=308. 0 40 40. 0+38. 02=39. 0 39. 0+273=312. 0 45 46. 0+45. 52=45. 75? 46. 0 46. 0+273=319. 0 50 51. 0+51. 02=51. 0 51. 0+273=324. 0 submit 5 slowness for Graphing info computing 3ln 1t deliberation 41T(K) better / high-minded Temperature (C) 30 ln1191? -5. 25 1304? 0. 003289 35 ln1132? -4. 88 1308? 0. 003246 40 ln197? -4. 57 1312? 0. 003205 45 ln173? -4. 29 1319? 0. 003134 50 ln153? -3. 97 1324? 0. 003086 weighing 5 (Activation Energy) lnk= -EaR ? 1T+lnA y = m(slope) x + c R=8. 314 Jmol-1K-1( diploma) information from Graph 1 y = -6045. 3x + 14. 705 -6045. 3 = -EaR Ea=8. 314 ? 6045. 3 =50260. 6242 J =50. 260624 2 KJ stochastic erroneousnesss numeration 6 (% haphazard phantasm for reasonable Temperature of the Reaction) intermediate temperature of the reply K 1. 0 K (Refer to dodge 2) % misconduct=1. 0304. 0+1. 0308. 0+1. 0312. 0+1. 0319. 0+1. 0324. 0? hundred ? 1. 596% calculation 7 (% hit-or-miss illusion for term) Time interpreted Seconds 1 Second (estimated gentle reaction time) (Refer to tabular array 2) % mistake=1191+1132+197+173+153? blow? 5. 569% numeration 8 (% haphazard misplay for Solutions) hit-or-miss misconduct for K2S2O8+KI+ Na2S2O3+starch 0. 02%? 3+0. 22. 5? snow ? 8. 06% numeration 8 (Total % ergodic Error) % Error=1. 596%+5. 569%+8. 06% =15. 225%=20% (one sig. fig. ) lowest manage figuring 9 (Final Answer) 50. 2606242 KJ 20% 50. 2606242 KJ =50. 3 KJ (3 sig. fig. smallest sig. fig. in calculation) 50. 2606242 KJ? 0. 2? 10. 052 KJ=10KJ (one sig. fig. ) observational topic 50. 3 KJ 10KJ 50. 3 KJ 20% report Cited Diploma plan alchemy Data Boo klet. second ed. Cardiff supranational baccalaureate Organization, 2008. 6. Print.