Evaluating An Enthalpy Change That Cannot Be Measured Directly.
Beginning of paper
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 we had to calculate as pa ....
Middle of paper
.... and a balance. Then thirty centimetres cubed of 2 molar HCL was
measured using 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 ....
------------------
Word count: 627
Page count: 3 (approximately 250 words per page)
