In an exothermic reaction, the enthalpy change is negative. which of the following is also true for an exothermic reaction?

the products have a lower potential energy than the reactants.

the reactants have a lower potential energy than the products.

the potential energy of both the reactants and products is the same.

the potential energy decreases, and then increases sharply at the end of the reaction.

Water ionizes by the equation h2o(l)⇌h+(aq)+oh−(aq) the extent of the reaction is small in pure water and dilute aqueous solutions. this reaction creates the following relationship between [h+] and [oh−]: kw=[h+][oh−] keep in mind that, like all equilibrium constants, the value of kw changes with temperature.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

What is the oxidation state of an individual bromine atom in nabro3?