Chemist

Name: Chan Amiezah assemblage fragment: Shahlan bin hadji Sapar Faridahtul Ariza Binti Ahmad Shah host code: PD/SCI/02 design denomination: BDTVEC Pre National diploma In Science Unit Title: Core Science Chemistry devotion Title: Assignment. II (RATE OF REACTION) smell set: 13th March, 2012 discover of experiment: 26th, March, 2012 Submission hear: 12th April, 2012 Instructor squall: Ampuan Md Sairol Azami Bin Ampuan Haji Said. TASK ONE Aim: To fight back the effect of temperature on a rate of chemical reaction. interruption: Apparatus: * Beakers * Paper * equip gauge * Retort stand * Bunsen burner * criterion piston chamber * 10 cm3 of sodium thiosulphate ascendant (Na2S2O3) * 5 cm3 abridge hydrochloric irate (HCL) * 40 cm3 H2O * Stopwatch * Thermometer single-valued function: First, 10cm3 of sodium thiosulphate event and 40cm3 of piss was thrifty into the beaker. Then, 5 cm3 of edit out hydrochloric was deliberate by utilise a small cylinder.

Next, the thiosulphate termination was warm by heating plant the firmness to get to the required temperature or cool the solution by using looking glass 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 morsel of paper marked with a muck up. The experiment was repeated at different temperature for : 10°C, elbow room of life temperature, 40°C and 70°C. Finally, the clock was halt and record when the cross was disappeared when looked from above. Temperature of the variety show 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 desire to get a adequate essay, social club it on our website: Ordercustompaper.com

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