Pennsylvania Cosmetology Practice Exam

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Prepare for the Pennsylvania Cosmetology Exam with study materials featuring flashcards and multiple choice questions. Each question comes with hints and explanations to enhance your understanding. Ace your exam with confidence!

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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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