EASY

11th CBSE

IMPORTANT

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Consider the titration of potassium dichromate solution with acidified Mohr's salt solution using diethylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is

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Important Questions on Redox Reactions

EASY

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

Number of moles of

{MnO}_{4}^{-}

required to oxidize one mole of ferrous oxalate completely in acidic medium will be

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11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

3.92 g

of ferrous ammonium sulphate are dissolved in

100 mL

water.

20 mL

of this solution requires

18 mL

of potassium permanganate during the titration for complete oxidation. The weight of

{KMnO}_{4}

present in one litre of the solution is (acidic medium)

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

{MnO}_{4}^{-}

ions are reduced in acidic condition to

{Mn}^{2 +}

ions whereas they are reduced in neutral condition to

{MnO}_{2}

. The oxidation of

25 mL

of a solution

X

containing

{Fe}^{2 +}

ions required in acidic condition

20 mL

of a solution

Y

containing

{MnO}_{4}^{-}

ions. What volume of solution

Y

would be required to oxidise

25 mL

of solution

X

containing

{Fe}^{2 +}

ions in neutral condition?

MEDIUM

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

Ceric ammonium sulphate and potassium permanganate are used as oxidising agents in acidic medium for oxidation of ferrous ammonium sulphate to ferric sulphate. The ratio of number of moles of cerium ammonium sulphate required per mole of ferrous ammonium sulphate to the number of moles of

{KMnO}_{4}

required per mole of ferrous ammonium sulphate is

EASY

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

How many

mL

0.125

M

{Cr}^{3 +}

must be reacted with

12.00 mL

0.200 M

{MnO}_{4}^{-}

if the redox products are

{Cr}_{2} O_{7}^{2 -}

and

{Mn}^{2 +}

?

HARD

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q I

Assuming complete ionization, the same moles of the following compounds will require the least amount of acidified

{KMnO}_{4}

for complete oxidation?

EASY

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q II

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because-

EASY

11th CBSE

IMPORTANT

Pradeep's New Course CHEMISTRY Vol.II>Chapter 8 - Redox Reactions>COMPETITION FOCUS>Q II

If a half cell,

A + e^{-} \to A^{-}

has a large negative potential, it follows that

Consider the titration of potassium dichromate solution with acidified Mohr's salt solution using diethylamine as indicator. The number of moles of Mohr's salt required per mole of dichromate is

Important Questions on Redox Reactions

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