Chemist

Name: Chan Amiezah
assemblage member: Shahlan bin Haji Sapar
Faridahtul Ariza Binti Ahmad Shah
Group code: PD/SCI/02
Programme Title: BDTVEC Pre National lambskin In Science
Unit Title: Core Science Chemistry
estimation Title: Assignment. II (RATE OF REACTION)
look set: 13th March, 2012
Date of experiment: 26th, March, 2012
Submission Date: 12th April, 2012
Instructor visit: Ampuan Md Sairol Azami Bin Ampuan Haji Said.





TASK ONE
Aim: To hold the effect of temperature on a rate of chemical reaction.
opening:























Apparatus:
* Beakers
* Paper
* Wire gauge
* Retort stand
* Bunsen burner
* touchstone piston chamber
* 10 cm3 of sodium thiosulphate ascendant (Na2S2O3)
* 5 cm3 dilute 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 measured by using a small cylinder.







Next, the thiosulphate solution was warm by heating the solution to get to the required temperature or cool the solution by using ice 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 piece of paper marked with a cross.
The experiment was repeated at different temperature for : 10°C, way of life temperature, 40°C and 70°C.
Finally, the clock was stopped 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: Orderessay



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