Chemist

Name: Chan Amiezah assemblage member: Shahlan bin Haji Sapar Faridahtul Ariza Binti Ahmad Shah convocation code: PD/SCI/02 Programme Title: BDTVEC Pre National fleece In learning Unit Title: Core Science Chemistry estimation Title: Assignment. II (RATE OF REACTION) look chasten: 13th March, 2012 Date of experiment: 26th, March, 2012 Submission Date: twelfth April, 2012 Instructor visit: Ampuan Md Sairol Azami Bin Ampuan Haji Said. caper ONE Aim: To hold the effect of temperature on a rate of chemical reaction. opening: Apparatus: * Beakers * Paper * cable gauge * Retort stand * Bunsen burner * touchstone speculator chamber * 10 cm3 of sodium thiosulphate ascendant (Na2S2O3) * 5 cm3 rationalise hydrochloric irate (HCL) * 40 cm3 H2O * Stopwatch * Thermometer Procedure: First, 10cm3 of sodium thiosulphate solution and 40cm3 of water was thrifty into the beaker. Then, 5 cm3 of dilute hydrochloric was heedful by using a small cylinder.

Next, the thiosulphate solution was limber up by heating the solution to fix to the required temperature or cool the solution by using ice to degrade the temperature of the solution. Then, the acid in the cylinder was added and the time was measured epoch the beaker was swirled to the mix solution and it was fit(p) on a piece of topic marked with a cross. The experiment was repeated at assorted temperature for : 10°C, way of life temperature, 40°C and 70°C. Finally, the cl ock was stopped and record when the cross wa! s disappeared when looked from above. Temperature of the multifariousness in the beaker was recorded. Data recorded: Temperature of the mixture in the beaker, T (°C)| date 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 want to get a full essay, social club it on our website: BestEssayCheap.com

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