Sasmsung Poter 5 Forces

CHM1022 testing ground Report 1 Rate Law of an Iodine Clock reply Name Sashini Naomi Wijesekera Student ID 23877847 Lab Partner Zahiya Imam Lab seance Monday 9. 00am Aim The aim of the experiment is to determine the factors that affect the deem of a reaction, by performing the iodine clock reaction and repeating it changing different initial conditions in order to measure and compare the rate of reaction for each experiment and experimentally determine the rate law. MethodRefer CHM1022 testing ground Manual, Semester 1 2013. Results and Calculations- Part A- Calculations of rate for one set of conditions 1. n(S2O32-)=CV =0. 0025M*(10/1000)L =2. 50*10-5 mole Molar ratio of I2 S2O32- = 1 2 n(I2)=0. 5*n(S2O32-) =0. 5*(2. 50*10-5mol) =1. 25*10-5mol Mean time taken for blue colour to place = (131sec+135sec+145sec)/3 =137seconds Rate of reaction=n(I2)/t =(1. 25*10-5mol/137sec) =9. 12*10-8mols-1 H2O2 C1V1=C2V2 0. 8*1=C2*99 C2=8. 8*10-3M I- C1V1= C2V2 0. 025*10=C2*99 C2=2. 53*10-3M H30+ C1V1= C2V2 0. 36*35=C2*99 C2=0. 127M S2O32- C1V1= C2V2 0. 0025*10=C2*99 C2=2. 53*10-4M Part B-Results and calculations B4 (i) n(S2O32-) = 0. 0025*(5/1000) = 1. 25*10-5mol Molar ratio of I2 S2O32-=1 2 n(I2)=0. 5*n(S2O32-) n(I2)= 0. 5*(1. 25*10-5) =6. 25*10-6mol B4 (ii) n(S2O32-)= 0. 0025*(20/1000) = 5*10-5mol Molar ratio ofI2 S2O32-=12 n(I2)=0. 5*n(S2O32-) n(I2)=0. 5*(5. 0*10-5) =2. 5*10-5mol Part B-Results and calculations Time/s n(I2)/mol Rate/mol s-1 Concentration/M 1 2 3 4 5 6 Mean time/s B1H202 (i)higher (ii)lower 66 63 61 67 69 60 64 1. 5*10-5 (1. 25*10-5)/64=1. 95*10-7 H2O2 C1V1= C2V2 0. 8*2=C2*99 C2=0. 016 249 287 242 262 252 260 259 1. 25*10-5 (1. 25*10-5)/259=4. 83*10-8 H2O2 C1V1= C2V2 0. 8*0. 5=C2*99 C2=4. 0*10-3 B2I- (i)higher (ii)lower 78 78 87 81 1. 25*10-5 (1. 25*10-5)/81=1. 54*10-7 I2 C1V1= C2V2 0. 025*20=C2*99 C2=5. 1*10-3 252 288 261 267 1. 25*10-5 (1. 25*10-5)/267=4. 68*10 -8 I2 C1V1= C2V2 0. 025*5=C2*99 C2=1. 26*10-3 B3H30+ (i)higher (ii)lower 91 92 94 92 1. 25*10-5 (1. 25*10-5)/92=1. 36*10-7 H30+ C1V1= C2V2 0. 36*70=C2*99 C2=0. 55 206 226 221 207 215 1. 25*10-5 (1. 25*10-5)/215=5. 81*10-8 H30+ C1V1= C2V2 0. 36*17. 5=C2*99 C2=0. 064 B4S2032- (i)lower (ii)higher 61 67 71 69 67 6. 25*10-6 (6. 25*10-6)/67=9. 33*10-8 S2032- C1V1= C2V2 0. 0025*5. 0=C2*99 C2=1. 26*10-4 230 245 244 240 2. 5*10-5 (2. 5*10-5)/240=1. 04*10-7 S2032- C1V1= C2V2 0. 0025*20=C2*99 C2=5. 05*10-4 B5(Temp) (i)warmer (ii)colder 65 60 58 61 1. 25*10-5 (1. 25*10-5)/61=2. 05*10-7 T=450C 288 310 303 300 1. 25*10-5 (1. 25*10-5)/300=4. 17*10-8 T=150C