Answer the following question given this paragraph: 

The extremely low hydronium ion concentration of pure water gives pure water a neutral pH of 7. Acids have a pH lower than 7, and bases have a pH higher than 7.


Q: What is the ph level for pure water?

 Choices:

- ph of 6.47

- ph of 3.17

- pH of 0

- ph of 7

A:
ph of 7
