00:02
Here in this problem, pk for three acids are given and we have to determine the dissociation constants that is ka for the acids.
00:12
Also we have to find out which one is the strongest acid.
00:17
First one, first acid a given pk, 2 .0.
00:22
What is pk that is negative log of ka that is equal to 2 .0? so you can write log of k a as negative 2 .0.
00:34
So k a is 10 to the power of negative 2 .0.
00:40
So we can determine k a as 10 to the power of negative pka.
00:46
So here k a 10 to the power of negative 2, that is 0 .01.
00:53
Then for the second one p .k .a 8 .10.
00:58
So we can write ka that will be 10 to the power of negative pk, that is negative 8 .10...