Evaluating an enthalpy change that can not be measured directly

Chemistry Experiment. Dr. Watson. Evaluating An Enthalpy Change That Cannot Be Measured Directly. Introduction. We were told that atomic number 11 henry change decomposes on warming to give atomic number 11 carbonate, body of water and carbon dioxide as shown in the par below:-         2NaHCO3(s)--------> Na2CO3 (s) + H2O (l) + CO2 (g) = DeltaH1 This was given as deltaH1 and we had to manoeuvre as part of the experiment. This however cannot be metrical directly, only if can be found exploitation the hydrogen changes from two new(prenominal) reactions. These being that of atomic number 11 hydrogencarbonate and hydrochloric sexually transmitted disease and also sodium carbonate and hydrochloric acid. We were given a list of instructions in how to take on expose the experiment, which are given later. add up of Apparatus Used. 1 x 500ml Beaker. 1 x Thermometer(-10 to 50oC). 1 x Polystyrene Cup. 1 x Weighing Balance. 1 x Weighing Bottle. 10 grams of Sodium Hydrogencarbonate. 10 grams of Sodium Carbonate. A bottleful of 2 molar HCL. Diagram. Method. Three grams of sodium hydrogen carbonate was plodding out accurately utilise a weighting bottle and a balance. wherefore thirty centimetres cubed of 2 molar HCL was measured using a beat cylinder. The acid was then placed into the polystyrene form 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 ou t with water and then thoroughly dried. This! was do three times for the sodium hydrogen carbonate so that I could pack every anomalies that were obtained. The experiment was then repeated in only the homogeneous manner except sodium carbonate was used sooner of sodium hydrogen carbonate. The results were then tabulated, this table is shown below. Results Table. Results Table... If you want to loll a full essay, order it on our website: BestEssayCheap.com

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