Some Important Compounds of Transition Metals

On oxidation of ${\mathrm{S}}_{\mathrm{2}}{\mathrm{O}}_3^{2-}$ by ${\mathrm{MnO}}_4^{-}$  in neutral aqueous medium, the oxidation number of S would change from:

The number of moles of ${\mathrm{KMnO}}_4$ that will be needed to react with one mole of sulphite ion in acidic solution is:

The following steps are involved in the manufacturing of potassium dichromate:

What is the difference in the oxidation number of $\mathrm{Cr}$ between X and Y?

In ${\mathrm{KMnO}}_4$, oxidation number of $\mathrm{Mn}$ is

What is the number of moles of ${\mathrm{KMnO}}_4$ that will be needed to react with one mole of sulphite ions in acidic solution?

What would occur in the reaction between potassium permanganate, ${\mathrm{KMnO}}_4$ and sodium sulphite, ${\mathrm{Na}}_2{\mathrm{SO}}_3$?

When thiosulphate ion is oxidised by iodine, which one of the following ion is produced?
 

When thiosulphate ion is oxidized by iodine, the new product X is formed. How many S-S linkage is/are present in X?

Balance the given chemical equation.

$\underset{}{{\mathrm{KMnO}}_4} + {\mathrm{H}}_2\mathrm{O} \to \mathrm{KOH} +\underset{}{ {\mathrm{MnO}}_2} +\left[\mathrm{O}\right]$

What is the melting point of potassium dichromate?

 Potassium dichromate is a yellow crystalline solid.

$\underset{\mathrm{Potassium} \mathrm{permanganate}}{2{\mathrm{KMnO}}_4}+3{\mathrm{H}}_2{\mathrm{SO}}_4+\underset{\mathrm{Hydrogen} \mathrm{sulphide}}{5{\mathrm{H}}_2\mathrm{S}} \to 2{\mathrm{MnSO}}_4+{\mathrm{K}}_2{\mathrm{SO}}_4+$ _____ $+8{\mathrm{H}}_2\mathrm{O}$

Which of the following species has oxygen in $-1$ oxidation state?

How many peroxy linkages are present in $Cr{O}_5$ ?

During oxidation of ferrous sulphate using mixture of dilute ${\mathrm{H}}_2{\mathrm{SO}}_4$ and potassium dichromate, oxidation state of chromium changes from

Write the balanced equation of the reaction of oxidising Nitrite ion to Nitrate in the presence of acidified potassium dichromate.

When sodium nitrite reacts with acidified Potassium Dichromate, what is produced?

When acidified Potassium Dichromate reacts with Nitrite ion, what will happen?