Class XI

Clausius statement of Second Law of Thermodynamics states that
  1. No process is possible whose sole result is the transfer of heat from a hotter object to a colder object
  2. Many processes are possible whose sole result is the transfer of heat from a colder object to a hotter object
  3. No process is possible whose sole result is the transfer of work from a hotter object to a hotter object
  4. No process is possible whose sole result is the transfer of heat from a colder object to a hotter object
Suppose that 1.00 kJ of heat is transferred to 2.00 mol argon (at 298 K, 1 atm). What will the final temperature Tf be if the heat is transferred at constant volume?
  1. 347 K
  2. 338 K
  3. 313 K
  4. 308 K
Suppose 5.00 mol of an ideal monatomic gas at an initial temperature of 298 K and pressure of 10.0 atm is expanded adiabatically and reversibly until the pressure has decreased to 1.00 atm. Calculate the enthalpy change, and the work done.
  1. -17,200 J, -11,200 J
  2. -20,300 J, -11,200 J
  3. -16,300 J, -11,200 J
  4. -18,600 J, -11,200 J
Thermodynamics is not concerned about
  1. the feasibility of a chemical reaction
  2. the extent to which a chemical reaction proceeds
  3. the rate at which a reaction proceeds
  4. energy changes involved in a chemical reaction
A cylinder confines 2.00 L gas under a pressure of 1.00 atm. The external pressure is also 1.00 atm. The gas is heated slowly, with the piston sliding freely outward to maintain the pressure of the gas close to 1.00 atm. Suppose the heating continues until a final volume of 3.50 L is reached. Calculate the work done on the gas.
  1. -112 J
  2. -152 J
  3. -132 J
  4. -172 J
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