Homework 1.5

# Homework 1.5 - HOMEWORK1.5

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HOMEWORK 1.5 Assume all gases are perfect unless stated otherwise. Unless otherwise stated, thermo chemical data  are for 298.15 K. 2.6b   A sample of 2.00 mol CH 3 OH(g) is condensed isothermally and reversibly to liquid at 64°C. The  standard enthalpy of vaporization of methanol at 64°C is 35.3 kJ mol −1 . Find  w q ∆U , and  ∆H  for this  process. 2.16b   A certain liquid has  vap H  = 32.0 kJ mol −1 . Calculate  q w ∆H , and  ∆U  when 0.75 mol is  vaporized at 260 K and 765 Torr. 2.17b   The standard enthalpy of formation of phenol is −165.0 kJ mol −1 . Calculate its standard  enthalpy of combustion 2.18b   From the following data, determine  f H  for diborane, B 2 H 6 (g), at 298 K: 2.20b   Calculate the standard enthalpy of solution of AgBr(s) in water from the enthalpies of formation  of the solid and the aqueous ions. 2.21b   Given that the standard enthalpy of combustion of graphite is −393.51 kJ mol −1  and that of  diamond is −395.41 kJ mol −1 , calculate the enthalpy of the graphite-to-diamond transition. 2.24b

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## This note was uploaded on 05/01/2011 for the course CHEM 345 taught by Professor Cardelino during the Fall '09 term at Spelman.

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Homework 1.5 - HOMEWORK1.5

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