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kttutoria
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Asked: 2022-04-13T03:20:26+00:00 In:

Rank these systems in order of decreasing entropy.

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Rank these systems in order of decreasing entropy.

Rank from highest to lowest entropy. To rank items as equivalent, overlap them.

  • A) 1 mol carbon tetrafluoride gas at 273K 40L
  • B) 1 mol krypton gas at 273K 40L
  • C) 1/2 mol krypton gas at 100K 20L
  • D) 1 mol krypton gas at 273K 20L
  • E) 1/2 mol krypton liquid at 100K
  • F) 1 mol fluorine gas 273K 40L
  • G) 1/2 mol krypton gas at 273K 20L

Thank you! Can you also provide an explanation how to figure it out? 

♦ Relevant knowledge
Entropy is a unit of measure of heat energy when a physical system begins to change state at a specified absolute temperature as it radiates and absorbs energy. When molecules are exposed to Heat, they begin to accelerate and easily upset processes in a closed system when no molecules need to be added or removed. Energy is not lost, they just increase or stay the same value at that time.

 

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1 Answer

  1. Best Answer

    Keep this in mind

    1.  The degree of disorder is called entropy. Higher levels indicate more entropy.
    2.  If two gases have the same number moles, the gas with more atoms per molecule will have greater entropy (due to more macrostates).
    3. The volume of the molecules is smaller, which means that they can move less around. This also reduces the possibility of different states and therefore the entropy.
    4.  A colder gas has less energy and atoms will not have as many energetic states.
    5.  Liquids are more organized than gas, which reduces their entropy.

    The answer will then be:

    A > F > B> D > G> C > E

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