Which statement is true if the mc001-1.jpghrxn of a reaction is positive? the reaction is endothermic. the reaction is exothermic. there is more reactant than product. there is more product than reactant.

The enthalpy change of a reaction is given as the difference in enthalpies of the products and reactants i.e.

ΔHrxn = ∑ΔH⁰f (products) - ∑ΔH⁰f(reactants)

If ΔH°f(products) > ΔH°f(reactants) then the value of the enthalpy change for the reaction ΔHrxn is positive.

Reactions which show a positive value of ΔHrxn proceed with the absorption of heat and are called as endothermic reactions.

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explanation:

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