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Evaluating An Enthalpy Change That Cannot Be Measured Directly.
Part I of Essay
Dr. Watson.
Introduction.
We were told that sodium hydrogencarbonate decomposes on heating to give sodium
carbonate, water and carbon dioxide as shown in the equation below:-
2NaHCO3(s)--------> Na2CO3 (s) + H2O (l) + CO2 (g) = DeltaH1
This was given as deltaH1 and .... Part II of Essay
.... a measuring cylinder. The acid was then placed into the
polystyrene cup and its temperature was taken and recorded using the thermometer.
The pre-weighted sodium hydrogencarbonate was then added to the solution, and
the final temperature was recorded.
The contents of the cup were then emptied out and the cup was washed out with
water and then thoroughly dried. This was done three times for the sodium
hydrogen carbonate so that I could remove any anomalies that were obtained.
The experiment was then repeated in exactly the same manner ex ....
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Words: 627 - Pages: 3
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