A thermodynamic state function is a quantity from Chemistry The
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A thermodynamic state function is a quantity
  • used to determine heat changes
  • whose value is independent of path
  • used to determine pressure volume work
  • whose value depends on temperature only


B.

whose value is independent of path
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A reaction straight A plus straight B space rightwards arrow space straight C plus straight D plus straight q is found to have a positive entropy change. The reaction will be

  • possible at high temperature

  • possible only at low temperature
  • not possible at any temperature
  • possible at any temperature

D.

possible at any temperature
For the reaction to be spontaneous, AG should be –ve which will be so at any temperature.
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For the process to occur under adiabatic conditions, the correct condition is
  • ∆T = 0
  • ∆p = 0
  • q = 0
  • w = 0

C.

q = 0
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In a process, 701 J of heat is absorbed by a system and 394 J of work is done by the system. What is the change in internal energy for the process?

Here,
 q = +701 J,  w = -394 J

According to first law of thermodynamics,



i.e. internal energy of the system increases by 307J

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The enthalpies of all elements in their standard states are:
  • unity

  • zero

  • <0

  • different for each element

B.

zero

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