Calculate Kb of Conjugate Base from Kw
The dissociation of diprotic acid H2C3H2O4 is as follows:
Ka1 corresponds to the dissociation of first acid H2C3H2O4, while Ka2 corresponds to the dissociation of the second acid HC3H2O4-.
We can calculate base dissociation constant Kb from acid dissociation constant Ka via this formula.
Kw is the ionic product of water and this formula only applies to conjugate acid-base pairs.
Hence to calculate Kb of HC3H2O4-, we need to use the Ka of its conjugate acid partner H2C3H2O4.
Therefore answer to this question is option C.
Topic: Ionic Equilibria, Physical Chemistry, A Level Chemistry, Singapore
Please SUBSCRIBE to my channel and SHARE this video with your friends if you find it helpful!
View the full video with description at my website https://chemistryguru.com.sg/calculat...
Looking for more FREE A Level Chemistry videos? Check out our huge collection of video lessons at https://chemistryguru.com.sg/a-level-...