The dissociation constant (K) for a particular acid is
A)[H+][HCO3-] / [H2CO3]
B)[HCO3-] / [H2CO3][H+]
C)[HCO3-][H2CO3] / [H+]
D)[H2CO3][H+] / [HCO3-]
E)[H+] / [HCO3-][H2CO3]

Question

Quizplus · Accepted Answer

The dissociation constant (K) for an acid HA dissociating into H+ and A- is given by [H+][A-] / [HA]. For carbonic acid (H2CO3), it dissociates into H+ and HCO3-, so the expression is [H+][HCO3-] / [H2CO3].

The Dissociation Constant (K) for a Particular Acid Is