endothermic reaction occur in adiabatic system what will happen?
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You can’t use the term endothermic for an isolated system. It is defined in terms of the enthalpy change for a reaction or process in a closed system.
However, if you are wondering whether a reaction or process that is endothermic in a closed system can still take place in an adiabatic system, the answer is yes. The best example is adiabatic expansion of a gas. The gas cools as some of the kinetic energy is converted to breaking cohesive forces between gas molecules, winding up as potential energy for cohesive interactions.
So at an intuitive level the process strikes us as endothermic, but it does not fit the formal definition.
However, if you are wondering whether a reaction or process that is endothermic in a closed system can still take place in an adiabatic system, the answer is yes. The best example is adiabatic expansion of a gas. The gas cools as some of the kinetic energy is converted to breaking cohesive forces between gas molecules, winding up as potential energy for cohesive interactions.
So at an intuitive level the process strikes us as endothermic, but it does not fit the formal definition.
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