a sour tasting substance that turns blue litmus paper red and has a pH less than 7
Acids are substances that, when dissolved in water, release positively charged hydrogen ions (H+)
Acids are substances that, when dissolved in water, release positively charged hydrogen ions (H+). They have a sour taste and can turn blue litmus paper red. The pH scale is used to measure the acidity or alkalinity (basicity) of a substance, with values ranging from 0 to 14. Substances with a pH less than 7 are considered acidic.
Acids react with bases to form salts and water. Some common examples of acids include lemon juice (citric acid), vinegar (acetic acid), and sulfuric acid.
When an acid dissolves in water, it donates hydrogen ions (H+) to the solution, thereby increasing the concentration of those ions. The presence of these positively charged ions is responsible for the acidic properties of the substance.
The pH scale quantifies the concentration of hydrogen ions in a solution. A pH of 7 is considered neutral, while pH values below 7 indicate increasing acidity. The lower the pH, the stronger the acid. For example, a solution with a pH of 2 is much more acidic than a solution with a pH of 6.
In summary, a substance that tastes sour, turns blue litmus paper red, and has a pH less than 7 is an acid.
More Answers:
Understanding Acid-Base Indicators: How They Work and Their Importance in Determining pH LevelsUnderstanding the pH Scale: The Meaning and Significance of a pH of 7
Exploring the Slippery and Bitter Substance: An Insight into Bases and Sodium Hydroxide