E. coli tolerates a pH range of 2-9, which is a what-fold difference in hydrogen ion concentration?
A) 7-fold
B) 100-fold
C) 1,000-fold
D) 10,000-fold
E) 10,000,000-fold

Question

Quizplus · Accepted Answer

The pH scale is logarithmic, meaning each unit change represents a tenfold change in hydrogen ion concentration. A pH range from 2 to 9 is a difference of 7 pH units, which corresponds to a 10^7 or 10,000,000-fold difference in hydrogen ion concentration.

E Coli Tolerates a PH Range of 2-9, Which Is