Breaking chemical bonds and forming the same number of stronger ones should be overall exothermic. Forming bonds is always exothermic. Bond enthalpy is the internal energy change when 2 bonded atoms are separated at constant pressure. Breaking chemical bonds and forming fewer bonds of the same strength should be overall exothermic. Breaking bonds is always endothermic.
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Breaking chemical bonds and forming the same number of stronger ones should be overall exothermic. F...
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