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    http://pmt.physicsandmathstutor.com/...%20Entropy.pdf

    question 8c

    markscheme:
    ΔG (b) = ΔG (a)
    (492.7 × 103 - T × 542.6) = (-24.8 × 103 - T × 15.2) (1)
    517.5 × 103 = 527.4 T (1)
    T = 981.2 K(1)
    Allow 980 - 982 Penalise missing 1000 by one mark

    I dont get it and also how do they rearrange this
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    It was a stretch and challenge question, never* to be repeated again.

    *highly unlikely.

    The MS answers the Q as well as I can and the rearrangement is basic algebra, grouping the T terms on one side and scaling.

    Make sure you understand the Q and what it is attempting to get the candidate to do, before attempting to understand the MS.
 
 
 
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Updated: March 14, 2018
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