CH6_Calorimetry_Study_Guide%281%29

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Unformatted text preview: Name: ___________________________________ CH101 Thermodynamics and Calorimetry – Study Guide sections 6.3, 6.4, 6.5, 6.6 and 6.7 in the textbook First Law of Thermodynamics (section 6.3) The First Law of Thermodynamics states that _______________________________________________. Heat and Work (section 6.4, 6.5, 6.6) The energy exchange between a system and its surroundings can be done through __________or ________. The heat capacity of a system is defined as __________________________________________________. The units of heat capacity are ______________. The specific heat capacity is defined as _____________________________________________________. The molar heat capacity is defined as _____________________________________________________. At constant volume, the change in a system’s internal energy is equal to ______________________________. At constant pressure, the change in a system’s internal energy is equal to ____________________________. The enthalpy change of a system at constant pressure is equal to___________________________________. Calorimetry (sections 6.5, 6.7) Heat Exchange at Constant Volume (Bomb Calorimeter) qcal = Ccal x ∆T qrxn = ‐qcal In the above equation, Ccal represents ___________________, and its units are____________________. Watch video tutorial on Blackboard Calculate the change in internal energy, ∆E, in kJ/mole, associated with the combustion of 1.00 g of butane (C4H10), if the temperature of the bomb calorimeter rose by 8.3oC? Assume that Ccal is equal to 6.00 kJ/oC. (ans ‐2890 kJ/mole) Heat Exchange at Constant Pressure (Coffee‐Cup Calorimeter) qsoln = msoln x Cs,soln x ∆T qrxn = ‐qsoln In the above equation, Cs,soln represents _____________________________, and its units are______________. Watch video tutorial on Blackboard Calculate qrxn for the reaction that occurs when 25.0 mL of 1.00 M HCl are added to 25.0 mL of 1.00 M NaOH in a coffee‐cup calorimeter at room temperature (25.0oC). The final temperature of the solution was 31.4oC. Assume that the density of the solution is 1.00 g/mL and that Cs,soln is 4.18 J/g.oC. (ans 1340 J) End of Chapter Practice Problems Tro First Edition: #39, 41, 45, 47, 63, 65 Tro Second Edition: #41, 43, 47, 49, 63, 65 answers are located in Appendix III of the textbook Take the Quiz on Blackboard 2 ...
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