Which statement is true if the hrxn of a reaction is positive? a.)the reaction is endothermic. b.)the reaction is exothermic. c.)there is more reactant than product. d.)there is more product than reactant.

The correct answer is Option A.

Explanation:

Endothermic reactions are defined as the reactions in which potential energy of the reactants is less than the potential energy of the products. The total enthalpy change of the reaction comes out to be positive. Energy is absorbed during this reaction.

Exothermic reactions are defined as the reactions in which potential energy of the products is less than the potential energy of the reactants. The total enthalpy change of the reaction comes out to be negative. Energy is released during this reaction.

From the above information, the correct answer is Option A.

it's c. elements are placed in rows based on how may valencies electrons have.

2b2t

explanation:

2b2t