The thermogram in Figure below shows the change in mass of a sample of Copper sulfate pentahydrate, CuSO++5H2O (249.5 g/mole) as a function of temperature. The original sample weighing 25.0 mg was heated from room temperature to 1000°C at a rate of 5º C per minute. The following changes in mass and corresponding temperature ranges were observed : Loss of 1.80 mg from 100 – 250° C. Loss of 7.212 mg from 350 – 550° C., Loss of 8.015 mg from 600 – 800° C. Determine the identities of the volatilization products and the solid residue at each step of the thermal decomposition. Given that, H=1 g/mol, S=32 g/mol, O=16 g/mol . 20.00 - 15.00 10.00- 500- 0.00 200 300 400 500 600 700 00 s00 1000 100 Temperature C) Thermogram for CuSO4.5H20 国

The thermogram in Figure below shows the change in mass of a sample of Copper sulfate pentahydrate, CuSO++5H2O (249.5 g/mole) as a function of temperature. The original sample weighing 25.0 mg was heated from room temperature to 1000°C at a rate of 5º C per minute. The following changes in mass and corresponding temperature ranges were observed : Loss of 1.80 mg from 100 – 250° C. Loss of 7.212 mg from 350 – 550° C., Loss of 8.015 mg from 600 – 800° C. Determine the identities of the volatilization products and the solid residue at each step of the thermal decomposition. Given that, H=1 g/mol, S=32 g/mol, O=16 g/mol . 20.00 - 15.00 10.00- 500- 0.00 200 300 400 500 600 700 00 s00 1000 100 Temperature C) Thermogram for CuSO4.5H20 国

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 5.101QE: In the 1880s, Frederick Trouton noted that the enthalpy of vaporization of 1 mol pure liquid is...

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The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qH2O? What is q of rxn? What is ΔHrxn? Is the reaction endothermic or exothermic?
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