Which of the following set is having correct statements? 1. H2O2 is a weak base text2 text. textH text2 textO text2 oxidizes Fe (II) to Fe (III) 3. H2O2 can be obtained by the electrolysis of conc. H2SO4 text4 text. textH text2 textO text2 reduces Mn (VII) to Mn (II)

Question

Which of the following set is having correct statements? 1. H2O2 is a weak base text2 text. textH text2 textO text2 oxidizes Fe (II) to Fe (III) 3. H2O2 can be obtained by the electrolysis of conc. H2SO4 text4 text. textH text2 textO text2 reduces Mn (VII) to Mn (II) (A) 2, 3 (B) 3, 4 (C) 2, 3, 4 (D) 1, 2, 3, 4

Tardigrade Admin · Accepted Answer

Here statements 2, 3 and 4 are correct as follows

H_{2} O_{2}

is weakly acidic, but more acidic than water.

H_{2} O_{2} + H_{2} O \to H_{3} O^{+} + H O_{2}^{-}

2 F e^{2 +} + H_{2} O_{2} + 2 H^{+} \to 2 F e^{3 +} + 2 H_{2} O

H_{2} S O_{4} ⇌ H^{+} + H S O_{4}^{-}

The peroxy disulphuric acid is hydrolysed separately to get

H_{2} O_{2}

.

H_{2} S_{2} O_{8} + H_{2} O \to H_{2} S O_{5} + H_{2} S O_{4}

H_{2} S O_{5} + H_{2} O \to H_{2} S O_{4} + H_{2} O_{2}

2 M n O_{4}^{-} + 5 H_{2} O_{2} + 6 H^{+} \to 2 M n^{2 +} + 8 H_{2} O + 5 O_{2}

Q. Which of the following set is having correct statements? 1. H2​O2​ is a weak base 2.H2​O2​ oxidizes Fe (II) to Fe (III) 3. H2​O2​ can be obtained by the electrolysis of conc. H2​SO4​ 4.H2​O2​ reduces Mn (VII) to Mn (II)

2, 3

3, 4

2, 3, 4

1, 2, 3, 4

Q. Which of the following set is having correct statements?

$1.$ $H_{2} O_{2}$ is a weak base

$2 . H_{2} O_{2}$ oxidizes Fe (II) to Fe (III)

$3.$ $H_{2} O_{2}$ can be obtained by the electrolysis of conc. $H_{2} S O_{4}$

$4 . H_{2} O_{2}$ reduces Mn (VII) to Mn (II)