Chemist

Name: Chan Amiezah assemblage element: Shahlan bin hajji Sapar Faridahtul Ariza Binti Ahmad Shah grouping code: PD/SCI/02 create mentally statute title: BDTVEC Pre National parchment In Science Unit Title: Core Science Chemistry estimation Title: Assignment. II (RATE OF REACTION) purport set: 13th March, 2012 meet of experiment: 26th, March, 2012 Submission eon: 12th April, 2012 Instructor see: Ampuan Md Sairol Azami Bin Ampuan Haji Said. TASK ONE Aim: To patronize the effect of temperature on a rate of chemical reaction. chess opening: Apparatus: * Beakers * Paper * telegram gauge * Retort stand * Bunsen burner * criterion piston chamber * 10 cm3 of atomic number 11 thiosulphate ascendant (Na2S2O3) * 5 cm3 disregard hydrochloric irate (HCL) * 40 cm3 H2O * Stopwatch * Thermometer surgery: First, 10cm3 of sodium thiosulphate source and 40cm3 of wet was thrifty into the beaker. Then, 5 cm3 of trend hydrochloric was thrifty by apply a small cylinder.

Next, the thiosulphate solving was warm by heat up the result to get to the involve temperature or cool the solution by using frost to lower the temperature of the solution. Then, the acid in the cylinder was added and the time was measured while the beaker was swirled to the mix solution and it was fit(p) on a fraction of paper marked with a bungle. The experiment was repeated at different temperature for : 10°C, fashion of life temperature, 40°C and 70°C. Finally, the clock was stop and record when the cross was disappeared when looked from above. Temperature of the motley in the beaker was preserve. Data recorded: Temperature of the mixture in the beaker, T (°C)| Time taken for the cross to disappear, t (s)| Rate of reaction, 1t (S-1)| 70°C| 2.6 s| 0.38 s-1| 40°C| 6.4 s| 0.16 s-1| 25°C| 5.4 s| 0.19 s-1| 10°C| 20.6 s| 0.05 s-1|...If you indispensability to get a expert essay, social club it on our website: Ordercustompaper.com

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