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 nuclear number 11 atomic number 1 change decomposes on melt to give atomic number 11 carbonate, 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 mensural directly, only if can be found exploitation the heat content changes from two new(prenominal) reactions. These being that of sodium hydrogencarbonate and hydrochloric back breaker 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. tend 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 Hydrogenca rbonate. 10 grams of Sodium Carbonate. A bottleful of 2 molar HCL. Diagram. Method. Three grams of sodium hydrogen carbonate was plodding out accurately using 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 cupful 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 thor oughly dried. This was do three times for t! he sodium hydrogen carbonate so that I could pack whatsoever anomalies that were obtained. The experiment was then repeated in only the akin manner except sodium carbonate was used instead of sodium hydrogen carbonate. The results were then tabulated, this table is shown below. Results Table. Results Table... If you want to fit a full essay, order it on our website: BestEssayCheap.com

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