Hydroxylamine reduces `Fe^(3+)` accoeding to the following reaction:
`2NH_2OH+4Fe^(3+)toH_2O+4Fe^(2+)+4H^(o+)+N_2O`
`Fe^(2+)` produced is is estimated by titration with `KMnO_4` solution A 10 mL sample of `NH_2OH` is diluted to 1000 mL. 50 " mL of " this diluted sample is boiled with excess of Fe (III) solution. The resulting solution required 12 " mL of " 0.02 M `KMnO_4` for complete oxidation. Determine the strength of `NH_2OH`.

Hydroxylamine reduce iron (III) according to the equation : 2NH_(2)OH + 4 Fe^(3+) rarr N_(2)O(g)uarr + H_(2)O + 4Fe^(2+) + 4H^(+) Iron (II) thus produced is estimated by titration with a standard permanganate solution. The reaction is MnO_(4)^(-) + 5 Fe^(2+) + 8H^(+) rarr Mn^(2+) + 5Fe^(3+) + 4H_(2)O A 10 mL sample of hydroxylamine solution was diluted to 1 litre. 50 mL of this diluted solution was boiled with an excess of iron (III) solution. The resulting solution required 12 mL of 0.02 M KMnO_(4) solution for complete oxidation of iron (II). Calculate the weight of hydroxylamine in one litre of the original solution

A sample of MnSO_4.4H_2O is reacted in air to give Mn_3O_4 . The residue Mn_3O_4 is dissolved in 100 " mL of " (N)/(12)FeSO_4 containing H_2SO_4 The solution reacts completely with 50 " mL of " KMnO_4 . 25 " mL of " this KMnO_4 requires 30 " mL of " (N)/(10)FeSO_4 for complete oxidation determine the amount of MnSO_4.4H_2O in the sample.

A sample of MnSO_4.4H_2O is reacted in air to give Mn_3O_4 . The residue Mn_3O_4 is dissolved in 100 " mL of " (N)/(12)FeSO_4 containing H_2SO_4 The solution reacts completely with 50 " mL of " KMnO_4 . 25 " mL of " this KMnO_4 requires 30 " mL of " (N)/(10)FeSO_4 for complete oxidation determine the amount of MnSO_4.4H_2O in the sample.

0.2 g if a sample of H_2 O_2 required 10 ml of 1 N KMnO_4 for titration in acidic medium. The percentage purity of H_2 O_2 sample is:

0.2 g if a sample of H_2 O_2 required 10 ml of 1 N KMnO_4 for titration in acidic medium. The percentage purity of H_2 O_2 sample is:

0.804 g sample of iron was dissolved in acid , Iron was reduced to +2 state and it required 47.2 mL of 0.112 N KMnO_4 solution for titration. Calculate the percentage of iron and Fe_3O_4 in the ore.