Single Choice

Identify Z in the reaction given below: $$2Mn{ O}^-_4+5H_2O_2+6H^+\rightarrow 2Z+5O_2+8H_2O$$

A$$Mn^{2+}$$
Correct Answer
B$$Mn^{4+}$$
C$$Mn$$
D$$MnO_2$$

Solution

$$\displaystyle 2Mn{ O }^-_4+5H_2O_2+6H^+\rightarrow 2Mn^{2+}+5O_2+8H_2O $$

Hydrogen peroxide reduces $$Mn(VII)$$ to $$Mn(II)$$ in acidic medium.

Thus $$Z$$ is $$Mn^{2+}$$.

Hence, option A is correct.

SIMILAR QUESTIONS

Redox Reactions

When chlorine is passed through hot concentrated caustic soda solution, the oxidation number of chlorine in one of the products increases from:

Redox Reactions

Characteristic oxidation number of atoms in free metal is

Redox Reactions

The oxidation states of sulphur in the anions, $$SO_{3}^{2-}$$, $$S_{2}O_{4}^{2-}$$ and $$S_{2}O_{6}^{2-}$$ follow the order :

Redox Reactions

Oxidation states of the metal in the minerals haematite and magnetite, respectively are:

Redox Reactions

Oxygen exhibits 0 oxidation state in:

Redox Reactions

The correct statement for the molecule $$ CsI_{3}$$ is that:

Redox Reactions

Which among the following shows maximum oxidation state?

Redox Reactions

Amongst the following, identify the species with an atom in $$+6$$ oxidation state.

Redox Reactions

The oxidation number of N and $$\displaystyle Cl$$ in $$\displaystyle NOCl{ O }_{ 4 }$$ respectively are :

Redox Reactions

Among the following, the correct order of acidity is

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