2. Rubidium has a heat of vaporization of 69.0 kJ/mol at its boiling point (686oC). For the process Rb(l)-->Rb(g) at 1 atm and 686oC. Calculate the value of DSsurroundings. 0 69.0 kJ/mol 71.9 J/K mol 61.0 kJ/mol -71.9 J/K mol
3. A change of state occurs within a system and produces 64.0 kB of heat which is transferred to the surrounding at a constant pressure and a constant temperature of 300K. For this process DSsurroundings is: 64.0 kJ -64.0 kJ -213 J/K 213 J/K none of these
4. Which of the following statements is always TRUE for a spontaneous process?I. DSsys > 0II. DSsurr > 0III. DSuniv > 0IV. GSsys > 0 I III IV I and III III and IV
I. DSsys > 0II. DSsurr > 0III. DSuniv > 0IV. GSsys > 0
5. Which of the following favors a negative DG? increasing energy and increasing entropy lowering energy and increasing entropy increasing energy and decreasing entropy lowering energy and decreasing entropy none of the above
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