problem2 - 4. The standard free energies of formation of...

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Up: Back to the Chemistry 2000 assignment index Chemistry 2000, Fall 1996, Thermodynamics Practice Problems 1. A 10kg piece of wood (specific heat capacity ) at is thrown into 100kg of water (specific heat capacity ) at . What is the final temperature of the wood and water? 2. Oxygen boils at and has a latent heat of vaporization of . 0.1kg of liquid oxygen at its boiling point is poured into a pyrex bottle (heat capacity ) initially at . The oxygen evaporates quickly so that little heat is lost to the surroundings during the vaporization process. What is the temperature of the bottle when all of the oxygen has evaporated? 3. The equilibrium constant for the reaction is at 298K. If the standard free energy of formation of liquid water is -237.2kJ/mol, what is the standard free energy of formation of the hydroxide ion?
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Unformatted text preview: 4. The standard free energies of formation of solid sodium chloride and of sodium ions and chloride ions are, respectively, -384.0, -261.87 and . Calculate for sodium chloride. Does your calculation agree with the notion that alkali metal salts are extremely soluble in water? 5. Use the following table to estimate the boiling point of carbon disulfide: Hint: What is at the boiling point? 6. Use the table of bond enthalpies to estimate the enthalpy change in the reaction 7. What is the acid dissociation constant of acetic acid at ? The acid dissociation constant at is and the enthalpy change for the dissociation reaction is -0.34kJ/mol. Marc Roussel Wed Nov 13 09:14:34 MST 1996...
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This note was uploaded on 03/03/2012 for the course CHEM 2000 taught by Professor Roussel during the Fall '06 term at Lethbridge College.

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problem2 - 4. The standard free energies of formation of...

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