Question

Which fact must be true if a relationship is endothermic? (1 point)


A. The bond energy released by breaking the bonds in the reactants is greater than the bond energy used to form the products.

B. The energy of each bond on the reactant side is greater than the energy of each bond on the product side.


C. More energy is needed to form the bonds on the product side than to form the bonds on the reactant side.

D. More bond energy is absorbed on the reactant side than released on the product side.

Answer 1

Answer:

A

Explanation:

Answer 2

The fact that is true if a relationship is endothermic is; the bond energy released by breaking the bonds in the reactants is greater than the bond energy used to form the products.

A reaction is endothermic if the bond  energy of the products is lesser than that of the reactants.

Recall that; ΔH = ∑Bond energy of reactants - Bond energy of products

Let us bear in mind that enthalpy is a state function. It depends on the initial and final states of the system.

Given that, the bond energy of products is less than that of reactants, we can say that; the bond energy released by breaking the bonds in the reactants is greater than the bond energy used to form the products.

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