Which of the following buffer systems would yield a pH of around 2? H2S04 and NaHSO4
B
H3PO4 and NaH2P04
C
HF and NaF
HC2H302 and NaC2H302
ما
E
NH3 and NHAOH

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.