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Glycerol

  • 12-02-2008 5:54pm
    #1
    daggy
    Registered Users Posts: 149 ✭✭


    Ok, bit of a waste of a thread but i have a specific question and figured i might get a good range of answers this way..

    Physics Experiment : variation of resistance of a metallic conductor with temperature..

    why the the frig do you need to use glycerol in the test tube with the coil and thermometer?i really cannot figure it out.. have a few ideas as to why but really unsure. It has been annoying me for ages.

    this is a really stupid boring thread but it will help me, seriously ! :o
    cheers


Comments

  • #2
    Cokehead Mother
    Closed Accounts Posts: 773 ✭✭✭Cokehead Mother


    I'm almost sure it's because glycerol has a lower specific heat capacity than water.

    I'm not sure why it having a lower specific heat capacity matters though.


  • #3
    Challenged
    Closed Accounts Posts: 40 ✭Challenged


    Points 1 and 5 in the Experimental Details gives you the information you need.

    http://www.studentxpress.ie/glycerol.pdf


  • #4
    conor89
    Closed Accounts Posts: 2 ✭conor89


    Ensure that the glycerol is in water and not just being heated directly. The water is used to stop the glycerol from reaching its flashpoint and burning everyting. Also glycerol is neither a good conductor nor a good insulator making it better than water.


  • #5
    daggy
    Registered Users Posts: 149 ✭✭daggy


    ah i see.. thanks for that. Coolness,thanks guys :)


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