00:01
Here in this problem given, ca acid dissociation constant of formic acid is 1 .8 times 10 to the power negative 4.
00:11
We have to find the kb of formate ion.
00:15
Now, kw, that is iron product constant of water, is given 1 .0 times 10 to the power negative 40.
00:23
Now, here acid is formic acid h cwh, when it loses a proton produces its conjugate base format ion, hcw minus.
00:39
So this is the acid and its conjugate base is formation.
00:44
And we know for a conjugate acid base pair, k -a times k -a, k -a -acid dissociation constant, k -b -b -b -base dissociation constant, and that is equal to kw, unproduct constant of water.
01:03
So we can find out kb, kw divided by ka...