Kazmo Posted March 15, 2013 Share Posted March 15, 2013 A solution with pH 10 is changed to pH 7. How much stronger or weaker has the solution become? How many more/fewer hydrogen ions are there? I was thinking because each step of the pH scale is 10x stronger/weaker, because pH 9 is 1 step (10x), pH 8 is 2 steps (100x), pH 7 is 3 steps (1000x), the solution has become weaker by 1000x. For the hydrogen ions, I was thinking the same thing applies, am I correct for thinking like this? Link to comment Share on other sites More sharing options...
Mark Ian Posted March 15, 2013 Share Posted March 15, 2013 the solution is now neutral, it was basic so it has become less basic -> weaker base. The PH scale is logarithmic, base 10. the amount of Protons in the solution is 10^-7 moles per liter at a ph of 7 and 10^-10 at a ph of 10. The amount of protons has increased though, youll have (10^(-10))-(10^(-7)) protons Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now