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.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.