Post test energy use and organisms

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.

Does the energy in a solid increase or decrease when changing to a liquid?

Identify the electromagnets with poles that are reversed from the electromagnet shown above