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Here are some common substances and their pH values:

- Baking soda, [tex]pH = 9[/tex]
- Milk, [tex]pH = 6[/tex]
- Tomato juice, [tex]pH = 3.5[/tex]
- Vinegar, [tex]pH = 2[/tex]

Sagot :

GinnyAnsweridn
Sure, let's break down the pH values for each substance:

1. Baking Soda:
- pH: 9
- Baking soda is a basic (or alkaline) substance. The pH scale ranges from 0 to 14, where a pH of 7 is neutral. Values greater than 7 indicate a basic solution, and values less than 7 indicate an acidic solution. Therefore, with a pH of 9, baking soda is mildly basic.

2. Milk:
- pH: 6
- Milk has a slightly acidic pH. A pH of 6 places it just below neutral on the pH scale, indicating that it contains a small amount of acidity.

3. Tomato Juice:
- pH: 3.5
- Tomato juice is acidic. With a pH of 3.5, it falls well into the acidic range. This level of acidity is characteristic of many fruits and vegetable juices.

4. Vinegar:
- pH: 2
- Vinegar is quite acidic. A pH of 2 signifies that vinegar is significantly more acidic than tomato juice and hence has higher acidity.

To summarize:
- Baking soda is basic with a pH of 9.
- Milk is slightly acidic with a pH of 6.
- Tomato juice is acidic with a pH of 3.5.
- Vinegar is highly acidic with a pH of 2.

I hope this detailed breakdown helps you understand the pH values of these common substances!
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