
2g of potassium ferrocyanide on boiling with conc. H2SO4 produces a gas. The gas is collected and then reacted with 3cc, 2 M ferric permanganate in acidic medium and the excess oxidant further requires 6cc, 3 M sodium oxalate for complete reaction in acidic medium. Calculate % purity of potassium ferrocyanide. Given,

Important Questions on Redox Reactions





of oxalic acid solution taken in a conical flask is titrated against from a burette using phenolphthalein indicator. The volume of required for the appearance of permanent faint pink colour is tabulated below for five experiments. The concentration, in molarity, of the solution is .
Exp. No. | Vol. of |
What is the value of ?
Round of your answer to the nearest integer.

A solution containing impure reacts completely with of in acid solution. The purity of (in ) is______ (mol. wt. of ; mol. wt. of )







A solution was made by adding of The normality of the solution is . The value of is _______
(The atomic mass of is )







