Of the choices below, which is true for the relationship shown?
[H2P2O7^2-] [H3O+]
-------------------
[H3P2O7^2-]
It is Ka for the acid H3P2O72−.

It is Kb for the acid H3P2O72−.

It is Ka for the acid H2P2O72−.

It is Kb for the acid H2P2O72−.

Question

Of the choices below, which is true for the relationship shown?
[H2P2O7^2-] [H3O+]
-------------------
[H3P2O7^2-]
It is Ka for the acid H3P2O72−.

It is Kb for the acid H3P2O72−.

It is Ka for the acid H2P2O72−.

It is Kb for the acid H2P2O72−.

anonymous · Answer

@jfraser can you help?

jfraser · Answer

when an acid, like the generic $HA$ dissociates, its dissociation equation is:$$HA + H_2O \leftrightharpoons H_3O^{+1} + A^{-1}$$what should the $K_A$ expression for this acid look like?