What is the pH level of pure water?

What is the pH level of pure water?

• A. 5
• B. 7
• C. 9
• D. 10

Answer: (B)

Pure water has a pH level of 7, which is considered neutral on the pH scale. The pH scale ranges from 0 to 14, where values below 7 indicate acidity, values above 7 indicate alkalinity, and a value of 7 means that the substance is neither acidic nor basic. In pure water, the concentration of hydrogen ions (H⁺) is equal to the concentration of hydroxide ions (OH⁻), resulting in a neutral state. This balance allows water to maintain a pH of 7 at 25 degrees Celsius, which is commonly used as a reference point. Any deviation from this value can indicate the presence of acids or bases. The other values provided represent solutions that are either acidic (5) or basic (9 and 10). These options do not accurately reflect the neutral pH of pure water, thus reinforcing that 7 is the correct answer.

Pure water has a pH level of 7, which is considered neutral on the pH scale. The pH scale ranges from 0 to 14, where values below 7 indicate acidity, values above 7 indicate alkalinity, and a value of 7 means that the substance is neither acidic nor basic.

In pure water, the concentration of hydrogen ions (H⁺) is equal to the concentration of hydroxide ions (OH⁻), resulting in a neutral state. This balance allows water to maintain a pH of 7 at 25 degrees Celsius, which is commonly used as a reference point. Any deviation from this value can indicate the presence of acids or bases.

The other values provided represent solutions that are either acidic (5) or basic (9 and 10). These options do not accurately reflect the neutral pH of pure water, thus reinforcing that 7 is the correct answer.