Ph Scale Logarithms: Calculating Acidity Difference

[caliban07]

How do I work out how many times more acidic a ph value of 6.8 is compared to 8.6? For example.

 

[caliban07]

Ps I'm not au fait with the formula shortcuts and they don't display on my iPhone so if this can be avoided It would be much appreciated.

Thanks

 

[jedishrfu]

This discussion may help:

http://www.Newton.dep.anl.gov/askasci/chem03/chem03663.htm

 

[caliban07]

This discussion may help:

http://www.Newton.dep.anl.gov/askasci/chem03/chem03663.htm

Thanks with this link I calculated that the example difference is 6.8 is around 64x more acidic than 8.6. Can anyone confirm if this is correct? Or if I'm talking baloney.

 

[Borek]

Concentration of H⁺ is about 63 times higher at pH 6.8 than it is at pH 8.6, that's correct. Whether the solution is 63 times more acidic depends on how you define "acidity".