which enthalpy is always _ve
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Change in enthalpy is always positive for endothermic reactions. Endothermic reactions are defined as reactions that need external energy to proceed. This external energy can be in the form of heat. Endothermic reactions are nonspontaneous and yield products that are higher in energy than the reactants
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In exothermic reaction as heat energy is released from reactants, it is always negative.
It is opposite in endothermic. i.e. it is positive.
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