Batteries have become so important in our daily lives that they deserve special study. They are responsible for the operation of portable computers, watches, telephones, calculators, radios, and even in medicine, in cardiac pacemakers.
So let's talk about the most popular one, the alkaline battery. Alkaline batteries receive this name because they are made from bases, they have sd in 1.5V and are not rechargeable.
What are the differences between acidic and alkaline batteries?
1. Composition: The alkaline battery is composed of an electrolytic mixture: basic NaOH paste (sodium hydroxide - good electrolytic conductor). The common dry cell contains NH ammonium chloride4Cl (acid salt) and is classified as acidic.
2. Application: The dry cell is used to produce small currents in continuous services and is therefore suitable for portable radios, telephones, doorbells, lanterns, signaling services, etc. The alkaline battery, in turn, is suitable for equipment that requires fast and strong energy discharges, such as toys, digital cameras, MP3 players, etc.
3. Durability: Alkaline batteries last about five times longer than acidic ones. Sodium hydroxide has higher electrical conductivity and consequently will transport energy faster than ammonium chloride. This fast reaction in basic batteries provides longer life to its constituents.
By Líria Alves
Graduated in Chemistry
Source: Brazil School - https://brasilescola.uol.com.br/quimica/pilhas-alcalinas.htm