Rhode Island Cosmetology and Barbering Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Rhode Island Cosmetology and Barbering Exam. Our quiz offers multiple choice questions and detailed explanations, ideal for mastering the knowledge necessary for certification in the cosmetology and barbering fields.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the pH of Sodium Hydroxide?

10.5 to 11.5
7 to 8
5 to 6
8.5 to 9.5

The correct answer is: 10.5 to 11.5

Sodium Hydroxide is a strong base with a pH of around 10.5 -11.5. This means it has a high concentration of hydroxide ions and low concentration of hydrogen ions. Options B, C, and D have a lower pH, which indicates a higher concentration of hydrogen ions and a more acidic solution. This does not match the properties of Sodium Hydroxide, making them incorrect options. Additionally, option B falls within the neutral pH range of 7, which is not accurate for a strong base such as Sodium Hydroxide. Therefore, option A is the most accurate and likely the correct answer.