Answer to Question #85261 in Other Biology for Michelle Bonilla
Let "a" is concentration of hydrogen ions in solution A, and "b" is concentration of hydrogen ions in solution B.
pH of solution A is log(a), while pH of solution B is log(b).
We know that a/b = 10000
Let's take logarithm of both parts:
log(a/b) = log(10000)
log(a/b) =log(a) - log(b) (it is a known math function), which is the difference in pH we need to identify.
log(a) - log(b) = log(10000)
log(a) - log(b) = 4
So, pH of solution A is 4 units greater than pH of solution B.