Barber Practice State Board Practice Exam

What is the pH level associated with alkalis?

1. 7.00

2. 6.00

3. 8.00

4. 9.00

The correct answer is: 7.00

The pH level associated with alkalis is generally above 7, indicating that these substances are basic in nature. A pH level of 7.00 is neutral, representing pure water, while any value greater than 7 indicates increasing basicity. Alkalis, which include substances such as sodium hydroxide and potassium hydroxide, typically have pH values ranging from 8 to 14. Values like 6.00 indicate a slightly acidic environment, whereas pH levels of 8.00 and 9.00 exemplify basic conditions, characteristic of alkalis. Thus, while the choice of 7.00 represents neutrality, the correct understanding is that alkalis specifically start from a pH above 7, highlighting their basic properties.