00:01
So, expression for solubility of silver cyan is agcn that gives out ag positive plus cn negative and solubility product is 1 .2 10 raised to part negative 16 while for formation it's ag positive plus 2cn negative which gives out agcn 2 whole negative and formation constant is 1 .0 10 raise to power 21.
00:46
We know the value for ksp is very small as compared to the kf.
00:52
So the most of silver from agcn is used up for the complex sign formation.
01:03
One mole of silver positive ion involved the formation of one mole of complex iron.
01:11
Also, one mole of agcn has two moles of cyanide.
01:18
Therefore, the concentration of ag positive from agcn and the concentration of ag positive ions used for the complex formation arsenic, which can be represented as ag, cn2 is equal to ag positive ion concentration.
01:42
The expression for ksp and kf can be determined using this equation.
01:51
We substitute, we rearrange ksp equation to determine the cyanide concentration.
01:58
That means cn equals concentration of ag positive divided by ksp...