According to the Arrhenius model of acids and bases, what happens when an acid is added to water?
The acid increases the concentration of hydroxide ions.
The acid increases the concentration of hydrogen ions.
The acid increases the concentration of water molecules.
The acid increases the concentration of salt ions.
hydroxide ions are formed
Thanks!
According to the Arrhenius model of acids and bases, when an acid is added to water, it increases the concentration of hydrogen ions (H+).
To understand this, we need to know that an acid is a substance that donates protons (H+) in a chemical reaction. When an acid is added to water, it dissociates into its constituent ions, including hydrogen ions (H+). These hydrogen ions increase the concentration of H+ in the water solution, making it more acidic.
To determine the effect of an acid on the concentration of hydrogen ions, we can measure the pH of the solution before and after adding the acid. pH is a measure of the concentration of hydrogen ions in a solution. A lower pH value indicates a higher concentration of hydrogen ions and a more acidic solution.
To measure the pH, you can use pH paper or a pH meter. pH paper is a special type of paper that changes color depending on the acidity or alkalinity of a solution. A pH meter is a more accurate instrument that measures the electrical potential difference between a pH electrode and a reference electrode.
So, to answer the original question, when an acid is added to water according to the Arrhenius model of acids and bases, it increases the concentration of hydrogen ions (H+).