Properties Of Solutions

  1. Feb 5, 2006 #1
    Solution Process

    Who ever answers this is a genius.

    The dissolution of gases in water is virtually always exothermic because __________.

    a. one of the two endothermic steps (separation of solute particles) in the solution-formation process is unnecessary

    b. the exothermic step in the solution-formation process is unnecessary

    c. gases react exothermically with water

    d. neither of the two endothermic steps in the solution-formation process is necessary

    e. all three steps in the solution-formation process are exothermic
     
    Last edited by a moderator: Feb 6, 2006
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  3. Feb 5, 2006 #2

    mrjeffy321

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    When dissolving a gas in a liquid, it is not necesary to expand the solute (the gas) in order to dissolve it, making the process need less input energy.
    Also, at room temperature, water is already has a few "pockets" availible to dissolve a solute in, making it require even less energy.
     
  4. Feb 6, 2006 #3
    in that case is d. correct ?
     
  5. Feb 6, 2006 #4

    mrjeffy321

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    I am reluctant to say that the second step is entitely unnecesary, I think it is just not as necesary. I think I am leaning towards a. as the answer.
     
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