The [ H₃O+] of a Solution with PH = 5

Multiple Choice

The [ H₃O+] of a solution with pH = 5.60 is

A) 3 × 10-6 M.
B) 2.5 × 10-8 M.
C) 2.5 × 10-6 M.
D) 4.0 × 10-6 M.
E) 4.0 × 10-9 M.