The pH of Coca-Cola is generally reported to be between 2.5 and 2.7. This acidity is primarily due to the presence of phosphoric acid (H₃PO₄). While Coca-Cola is a carbonated beverage, the dissolved carbon dioxide contributes minimally to its overall acidity.
Different Reported pH Values
Several studies and sources report slightly varying pH levels for Coca-Cola:
- 2.6 to 2.7: This range is frequently cited as the typical pH of Coca-Cola, attributed mainly to phosphoric acid. [Source: RSC Education, Reddit, various online sources]
- 2.37: Some studies have measured Coca-Cola Classic's pH at 2.37. [Source: NCBI - The pH of beverages available to the American consumer]
- 2.50 - 2.56: Other reports show a pH range around 2.50 to 2.56. [Source: Reddit, various online sources]
These minor variations may be due to differences in Coca-Cola formulations, measurement techniques, or the specific Coca-Cola product tested (e.g., Classic, Cherry).
The Significance of Coca-Cola's Acidity
The low pH of Coca-Cola is significant because it indicates a high level of acidity. This acidity contributes to its tart flavor but also means it can erode tooth enamel over time if consumed excessively. The acidity is not concentrated enough to cause immediate serious harm, however.
Understanding pH
pH is a scale used to measure how acidic or basic a substance is. A pH of 7 is neutral. Values below 7 indicate acidity, and values above 7 indicate basicity (alkalinity). Lower pH values represent stronger acids.
