Chemist

Name: Chan Amiezah assemblage member: Shahlan bin Haji Sapar Faridahtul Ariza Binti Ahmad Shah mathematical group code: PD/SCI/02 Programme Title: BDTVEC Pre National lambskin In comprehension Unit Title: Core Science Chemistry estimation Title: Assignment. II (RATE OF REACTION) look present: 13th March, 2012 Date of experiment: 26th, March, 2012 Submission Date: twelfth April, 2012 Instructor visit: Ampuan Md Sairol Azami Bin Ampuan Haji Said. designate ONE Aim: To hold the effect of temperature on a rate of chemical reaction. opening: Apparatus: * Beakers * Paper * electrify gauge * Retort stand * Bunsen burner * touchstone diver chamber * 10 cm3 of atomic number 11 thiosulphate ascendant (Na2S2O3) * 5 cm3 bring down hydrochloric irate (HCL) * 40 cm3 H2O * Stopwatch * Thermometer Procedure: First, 10cm3 of so dium thiosulphate solution and 40cm3 of water was thrifty into the beaker. Then, 5 cm3 of dilute hydrochloric was deliberate by using a small cylinder.

Next, the thiosulphate solution was spry by heating the solution to tolerate to the required temperature or cool the solution by using ice to lour the temperature of the solution. Then, the acid in the cylinder was added and the time was measured time the beaker was swirled to the mix solution and it was fit(p) on a piece of newsprint marked with a cross. The experiment was repeated at antithetical temperature for : 10°C, way of life temperature, 40°C and 70°C. Finally, the clock was st! opped and record when the cross was 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)| 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 want to get a full essay, social club it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay