Buffer solutions:
A. work best when the pH of the buffer is two pH units above its pKa.
B. have a greater buffering capacity at lower concentrations.
C. buffer best when almost entirely in the conjugate base form.
D. have a characteristic Ka, which can be expressed as [HA]/[A-][ H3O+].
E. do not change very much when H3O+ and OH- are added.
E
You might also like to view...
Piedraia hortae causes ________.
A. black piedra B. white piedra C. tinea versicolor D. All of the choices are correct.
The teeth in the very front of your mouth are incisors
____________________ Indicate whether the statement is true or false.
During normal DNA replication, why is part of the DNA at the ends of linear chromosomes NOT copied into the new DNA strands?
a. because DNA ligase cannot join pieces at the end of a chromosome b. because RNA primers at the beginning of a new strand cannot be replaced with DNA c. because those ends are Okazaki fragments that are lost d. because cells do not need the DNA at the ends of chromosomes
The tree of life:
a. provides us with a map of the history of life. b. provides us with a map that reflects the process of descent with modification. c. connects evolutionary history to the current diversity of life on Earth. d. All of the above.