00:02
Hello student, in this question we have to find out the concentration of fe3 positive ions and scn negative ions at various concentrations of the given compounds.
00:19
In all the solutions, the concentration of iron 3 positive would be constant as the same volume of iron nitrate is being used.
00:38
Solution 1 5 ml iron nitrate is mixed with 5 ml of potassium thiosynate.
00:59
The total volume of solution will now be 10ml.
01:05
Using the equation m1 v1 equals m2 v2, the molarity at the volume 5 ml is multiplied by 10 to the power minus 3 molar.
01:24
It will be equal to the molarity when the volume is 10 ml.
01:31
Hence, after doing the calculations, the concentration of fe3 positive ions would be equal to 10 to the power minus 3 molar in all solutions.
01:54
In the solution 1, the volume of iron nitrate is equal to the volume of potassium thiosynate which is equal to 5 ml hence the concentration of iron 3 positive ions would be equal to the concentration of thiosynate ions so in the solution 1 the concentration of thiosinate ions will also be equal to 10 to the par minus 3 molar for the solution 2 the volume of potassium thiosynate is equal to 4 ml while as the total volume of solution is 10 ml using the formula m1 v1 equals m2 v2 putting in the values of m1 as 2 into 10 to the power minus 3 and v1 as 4 would be equal to the molarity when the solution is having 10 m l volume.
03:20
After doing the calculations, the concentration of thiosynate ions comes out to be 0 .8 into 10 to the power minus 3 molar.
03:33
In the solution third, the volume of potassium thiosinate is 3ml, while the total volume of solution is 10ml...