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

Your answer is C. q < 0

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.