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3. All burning reactions are exothermic. What do you think dissolution reactions will be? exothermic endothermic either exothermic or endothermic neither, zero heat change 4. Heats of solution are measured at very low concentration. If you keep adding equal quantities of a compound to a solution, do you think that the magnitude of the heat absorbed or emitted will be higher, lower, or the same for the later additions than for the earlier ones? higher lower the same