Physical Chemistry

1 Suppose 120 g of water gas is compressed isothermally at 6000C from 10 L to 2 mL.  Calculate the heat and work done by the system, the change in internal energy, and the change in entropy if:  
 a)  the process is via a reversible path (sketch the pathway)  b)  the process is non-reversible (sketch the pathway)  c)  which pathway will require the least work and why?   (10 marks)  
2. Calculate the enthalpy of formation of hexane (CH3CH2CH2CH2CH2CH3) from:  
i. Combustion data  ii. Bond enthalpies

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