The Total solution for NCERT class 6-12
What is the maximum concentration ofequimolar solutions of ferrous sulphate and sodium sulphide so that when mixedin equal volumes, there is no precipitation of iron sulphide? (For ironsulphide,┬аKsp┬а= 6.3 ├Ч 10тАУ18).
Answer - 71 : - Let the maximum concentration of each solutionbe┬аx┬аmol/L. After mixing, the volume of the concentrations ofeach solution will be reduced to half i.e.,
Ifthe concentrations of both solutions are equal to or less than 5.02 ├Ч 10тАУ9┬аM, then there willbe no precipitation of iron sulphide.