Which formula is used to indicate the degree of acidity of an acid?
-
A.
( [H^+] = ^{text{mass of acid relative}} molecular mass of acid ) -
B.
F = number of H+ = ions x molar mass of the acid -
C.
Kw = [H+][OH-] -
D.
pH = – log10[H+] -
E.
pKa = -log10Ka