Our understanding of chemical reactions as acid-base interactions comes from the wide acceptance of the Lewis definition of acids and bases, which supplanted both the earlier Bronsted-Lowry concept and the first definition--the Arrhenius model. ... Although this model is intuitively correct, it is limited to substances that include proton and hydroxide groups. ... Arrhenius model - Arrhenius proposed that acids are substances that produce protons, H+, in aqueous solution, whereas bases produce hydroxide ions, OH-, in aqueous solution. ...

• Word Count: 549
• Approx Pages: 2
• Grade Level: High School