Massachusetts Board of Cosmetology Practice Exam

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Prepare for the Massachusetts Board of Cosmetology Exam with our comprehensive study guide. Get ready with practical questions and insights designed to help you ace the exam and launch your career in cosmetology!

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What is the pH of Sodium Hydroxide?

  1. 10.5 to 11.5

  2. 7 to 8

  3. 5 to 6

  4. 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.

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