Acids, Bases and pH Scales
Title: Acids, Bases and pH Scales
Category: /Science & Technology/Chemistry
Details: Words: 587 | Pages: 2 (approximately 235 words/page)
Acids, Bases and pH Scales
Category: /Science & Technology/Chemistry
Details: Words: 587 | Pages: 2 (approximately 235 words/page)
What is an acid and a base?
The first person that tried to define acids and bases was Arrhenius. His theory proposed that an acid is any substance that produces a proton H+, when dissolved in water and the resulting solution is an electrolyte. A base is any substance that produces hydroxide ions, when dissolved in water; they are also called alkali. This theory was able to explain the way acids and bases react; the
showed first 75 words of 587 total
You are viewing only a small portion of the paper.
Please login or register to access the full copy.
Please login or register to access the full copy.
showed last 75 words of 587 total
to which a base removes a proton from water. These results are recorded in a table called the pH scale. This scale is logarithmic which means that point represents a 10x difference with the one below or above. It goes from 0 to 14; 0 being the most acidic substance (hydrochloric acid), 7 being the most neutral substance (simple water) and 14 being the most basic substance (sodium hydroxide).
References:
Encarta Online Encyclopedia
Science Power 10, pages 226-230
Britannica Online Encyclopedia