Wednesday, February 27, 2013

Experiment

Experiment: - Determining superman concentration
Aim:-
The solve of this experiment is to determine the concentration of two acids, hydrochloric acid HCl, and Ethanoic acid, by thermometric titration, and having done that, to calculate the enthalpy change of neutralization.
launch:-
both hydrochloric acid and ethanoic acid were titrated. In turn with a standardized solution of sodium hydrated oxide and temperature of the mixtures was recorded during the figure of titration.
In each case a plot of temperature against cadence will enable as to determine the maximum temperature rise. From which we mensural the concentration of acid and the enthalpy change of neutralization.
Requirements:-
Safety eyeglasses
pipette 50.0cm
Pipette filler
Expanded polystyrene cup
sodium hydroxide solution 1Mol
Thermometer
Burette, 50.0cm
try funnel, small
hydrochloric acid
Ethanoic acid
Risk Assessment :-
as usual in whatever lab experiment we dressed on safety coats, and the lam was done smoothly to avoid any breakage and distress.
Sodium hydroxide is very corrosive therefore we used, the pipette filler supplied and safety spectacles.
Hydrochloric and ethanoic acids can cause serious permanent damage to skin so extra care was given.
Contact with the eye can cause serious long-term damage.

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Hence spectacles were on all the time.
Procedure:-
Titration of hydrochloric acid with standardizes sodium hydroxide solution
1. 50 cm of NaOH solution was transferred into the polystyrene cup by victimization pipette. Few minutes was give to stand.
2. The temperature was recorded.
3. 5cm of HCl solution was added to the cup by using burette.
4. The mixture was stir, using the thermometer, and the result was recorded.
5. 5cm portions of hydrochloric solution were added successively, it was stirred and temperature was recorded.
6. The results were recorded in the table below, after the addition of 50cm of acid
Titration of Ethanoic acid with standardizes sodium hydroxide...If you want to get a full essay, assign it on our website: Orderessay



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