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    stargirl_2421's Avatar
    stargirl_2421 Posts: 2, Reputation: 1
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    #1

    May 9, 2009, 06:54 PM
    Chemistry: Molar heat of solution
    Hey,

    A few days ago we were taught different equations relating to heat of solution. We were given a lab (Heat of Solution) and have to determine the molar heat of solution. I have been looking everywhere for this equation but I can't find it. I really confused and the lab is due Monday.

    Does anyone know the equation? It'll help me tremendously if someone know it. Thanks in advance!

    -Arianna
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    May 9, 2009, 08:07 PM
    Is this what you want?
    stargirl_2421's Avatar
    stargirl_2421 Posts: 2, Reputation: 1
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    #3

    May 10, 2009, 09:07 AM
    I hope so :) Otherwise I'll fail my lab. Thank you for answering!
    vscope's Avatar
    vscope Posts: 1, Reputation: 1
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    #4

    Jun 4, 2010, 08:21 PM
    ∆Hexp = |mC∆T|, where ∆Hexp is the experimental value (taken as positive) for change heat, m is the mass of water, C is the specific heat capacity of water and ∆T is the change in temperature (initial temperature minus final temperature).

    The molar heat of solution or ∆Hsoln (expressed in kJmol-1) is the amount of heat energy absorbed by one mole of the salt. It is calculated by dividing ∆Hexp by the number of moles of the salt that took place in the reaction. The real value for ∆Hexp is used as a negative value for ∆Hsoln indicates that heat energy was released.
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