H3PO4 loses an H to become H2PO4, H3PO4 is a(n).
and H2PO4 is the
H, PO
H' + H PO,
K, -7.5 x 10
pk, = 2.12
H, PO,
K, = 6.2 x 10
pk, = 7.21
H + HPO,
H PO,"?
HPO?
K, = 4.8 x 10
pk, = 12.30
K./K, = 1.2 x 10
K_/K, =1.2 x 103
A. acid; conjugate base
B. acid, conjugate
acid
C. base; conjugate base
D. base; conjugate acid