### What the ratio of the "concentrations of two species" are?

Posted: **Sun Aug 21, 2011 12:50 pm**

by **Chem_Mod**

Question: How do we know what the ratio of the "concentrations of the two species" are? How do we know which concentration is the numerator and which one is the denominator?

### Re: what the ratio of the "concentrations of two species' a

Posted: **Sun Aug 21, 2011 12:50 pm**

by **Chem_Mod**

Answer: It doesn't matter if you put the acid/base or the base/acid. The same answer should be obtained and based on the question the value can be inversed to find the right ratio.