pH of saliva is

Options

A. `6.8`
B. `8`
C. `7`
D. `9.5`

Explanation

**Step-by-Step Solution:**

1. **Understanding Saliva**: Saliva is a fluid produced in the mouth that plays a crucial role in the digestion process. It helps in breaking down food and contains enzymes that initiate digestion.

2. **pH Range of Saliva**: The pH of saliva typically ranges from 6.2 to 7.6. This means that saliva is slightly acidic to neutral.

3. **Average pH Value**: The average pH value of saliva is approximately 6.8. This value indicates that saliva is slightly acidic.

4. **Factors Affecting pH**: The pH of saliva can vary based on dietary intake and the presence of bacteria in the mouth. For instance, when carbohydrates are consumed, bacteria in the mouth metabolize these carbohydrates and produce acids such as lactic acid, butyric acid, and aspartic acid.

5. **Impact of Acids on pH**: The production of these acids by mouth bacteria can lower the pH of saliva, making it more acidic. This fluctuation in pH is a natural response to the types of food consumed.

6. **Conclusion**: Therefore, the pH of saliva is generally around 6.8, which is slightly acidic, and can vary based on dietary habits and oral bacteria activity.

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