35. A unit of pH change actually indicates a change of what in Hydrogen ion concentration?
Ten (10) times change. This is not a linear series, it changes exponentially. The difference between pH 1 and pH 2 is ten times, the difference between pH 1 and pH 3 is 100 times (10 times 10), difference between pH 1 and pH 4 is 1000 times (10 times 10 times 10). The amount changes logarithmically.
