help?
Distilled water has a hydronium ion concentration of 1 × 10–7 M. What is the pH of distilled water?
7
–7
10
1 × 10–7

Question

help?
Distilled water has a hydronium ion concentration of 1 × 10–7 M. What is the pH of distilled water?  
7
–7
10
1 × 10–7

anonymous · Answer

Please post questions in the right group. This is obviously a chemistry-question, yet you're posting it in the physics group.. why?

2nd: Do you know the definition of the pH ?

anonymous · Answer

Sorry I thought this was the right group.

anonymous · Answer

Nevermind - you surely learned about pH just a while ago, I assume.. do you remember how it is defined? If not - either look it up on your notes or maybe on wikipedia.. [1] 1. http://en.wikipedia.org/wiki/PH_value