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15 July, 22:09

What is the heat content, q, of the reaction when glucose burns? A. q = 0 B. q > 0 C. q < 0 D. q ≥ 0

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  1. 15 July, 23:02
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    Your answer is C. q < 0
  2. 16 July, 01:33
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    C) q< 0

    Explanation:

    The burning of glucose is a combustion reaction, and it will release heat for the surroundings. All combustion reactions are exothermic. So, the enthalpy will decrease, and the heat will be negative. Then, q<0.

    Q>0 only for endothermic reactions, the ones which gain heat for the surroundings; and q = 0 for adiabatic reactions, which there isn't heat flowing.
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