entropy and free energy

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  • Created by: Beth
  • Created on: 01-12-14 11:17

1. can endothermic reactions be spontaneous

  • no, its also effected by enthalpy change
  • yes, its also effected by entropy change
  • no, the sytem has gained energy so becomes less stable
  • yes, its also effected by enthalpy change
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2. entopy values are

  • positive only
  • negative only
  • can be negative and positive

3. free energy is

  • ΔS
  • energy released from a system
  • ΔH-TΔS
  • extra energy in a sytem

4. temperature 25˚c is the same as....in K

  • 278
  • 273
  • 298
  • 293

5. entropy units are

  • jKˉ1molˉ1
  • kjmolˉ1
  • Kjkˉ1molˉ1
  • jmolˉ1

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