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Thermodynamics

Question
CBSEENCH11006053

Why ∆H is positive in an endothermic reaction?

Solution
Endothermic reactions are accompanied by the absorption of heat which means that enthalpy of the reaction is less than the enthalpy of the products i.e.
      straight H subscript straight R space less than thin space straight H subscript straight P
But  
 increment straight H space equals space straight H subscript straight P space minus space straight H subscript straight R
therefore space space space space space space increment straight H space is space plus ve