HARD

Earn 100

100 mL solution of FeC₂O₄ And FeSO₄ Are completely oxidised by 60 mL of 0.02M KMnO₄ In acid medium the resulting solution is then reduced by Zn + dil HCl.

The reduced solution is again oxidised completely by 40 mL of 0.02M KMnO₄. Calculate normality of FeC₂O₄ And FeSO₄ In mixture

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Important Questions on Redox Reactions

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The volume strength of

8.9 M H_{2} O_{2}

solution calculated at

273 K

and 1 atm is

........ (R = 0 .0821 L atm K^{- 1} {mol}^{- 1})

(rounded off to the nearest integer)

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The number of moles of electron required to reduce

0.2

mole of

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

{Cr}^{+ 3}

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

A $20.0 mL$ solution containing $0.2 g$ impure $H_{2} O_{2}$ reacts completely with $0.316 g$ of ${KMnO}_{4}$ in acid solution. The purity of $H_{2} O_{2}$ (in $%$ ) is______ (mol. wt. of $H_{2} O_{2} = 34$ ; mol. wt. of ${KMnO}_{4} = 158$ )

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

A $100 mL$ solution was made by adding $1.43 g$ of ${Na}_{2} {CO}_{3} . {xH}_{2} O .$ The normality of the solution is $0.1 N$ . The value of $x$ is _______

(The atomic mass of $Na$ is $23 g / mol$ )

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The volume of 0.1 M strong dibasic acid sufficient to neutralize 1g of a base that furnishes 0.04 mole of

O H^{-}

in aqueous solution is :

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The volume, in

mL

, of

0.02 {MK}_{2} {Cr}_{2} O_{7}

, solution required to react with

0.288 g

of ferrous oxalate in acidic medium is

\dots \dots \dots \dots

(Molar mass of

Fe = 56 {gmol}^{- 1}

)

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The strengths of

5.6

volume hydrogen peroxide (of density

1 g / mL

) in terms of mass percentage and molarity

(M)

respectively, are: (Take molar mass of hydrogen peroxide as

34 g / mol

)

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

A fuel cell generates electricity by using methanol as fuel and

O_{2}

as the oxidant. Calculate the equivalent weight of methanol.

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The strength of $11.2$ volume solution of $H_{2} O_{2}$ is

[Given that, the molar mass of $H = 1 g m o l^{- 1}$ and $O = 16 g m o l^{- 1}$ ]

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

100 m L

of a water sample contains

0.81 g

of calcium bicarbonate and

0.73

g of magnesium bicarbonate. The hardness of this water sample expressed in terms of equivalents of

C a C O_{3}

is:
(molar mass of calcium bicarbonate is

162 g m m o l^{- 1}

and magnesium bicarbonate is

146 g m o l^{- 1})

HARD

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

$5.00 mL$ of $0.10 M$ oxalic acid solution taken in a conical flask is titrated against $NaOH$ from a burette using phenolphthalein indicator. The volume of $NaOH$ required for the appearance of permanent faint pink colour is tabulated below for five experiments. The concentration, in molarity, of the $NaOH$ solution is $xM$ .

Exp. No.	Vol. of $NaOH$ $(mL)$
$1$	$12.5$
$2$	$10.5$
$3$	$9.0$
$4$	$9.0$
$5$	$9.0$

What is the value of $100 x$ ?

Round of your answer to the nearest integer.

HARD

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one molecule of

{CO}_{2}

is:

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

4 g

of copper was dissolved in

conc . {HNO}_{3}

. The copper nitrate thus obtained gave

5 g

of its oxide on strong heating the equivalent weight of copper is

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The volume (in

mL

) of

0.1 N NaOH

required to neutralise

10 mL of 0.1 N

phosphinic acid is ____________.

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

0.45 g

acid of molecular mass

90

was neutralise by

20

ml

0.5 N KOH

. The basicity of the acid is

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

In basic medium

{CrO}_{4}^{2 -}

oxidises

S_{2} O_{3}^{2 -}

to form

{SO}_{4}^{2 -}

and itself changes into

Cr {(OH)}_{4}^{-}

.The volume of

0.154 {MCrO}_{4}^{2 -}

required to react with

40 mL

0.25 {MS}_{2} {O_{3}}^{2 -}

is _____

mL .

(Rounded-off to the nearest integer)

EASY

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

How much

K_{2} {Cr}_{2} O_{7}

(molecular weight

= 294.19

) is required to prepare one litre of

0.1 N

solution ?

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

In order to oxidize a mixture of one mole of each of

F e C_{2} O_{4}, F e_{2} {(C_{2} O_{4})}_{3}, F e S O_{4}

and

F e_{2} {(S O_{4})}_{3}

in acidic medium, the number of moles of

K M n O_{4}

is:

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

The volume strength of

1 M H_{2} O_{2}

is:

(Molar mass of

H_{2} O_{2} = 34 g mol^{- 1}

)

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions>Redox Reactions and Titration

What is the hardness of a water sample

(

in terms of equivalents of

{CaCO}_{3})

containing

10^{- 3} M {CaSO}_{4}

(

Molar mass of

{CaSO}_{4} = 136 g {mol}^{- 1})

100 mL solution of FeC2O4 And FeSO4 Are completely oxidised by 60 mL of 0.02M KMnO4 In acid medium the resulting solution is then reduced by Zn + dil HCl. The reduced solution is again oxidised completely by 40 mL of 0.02M KMnO4. Calculate normality of FeC2O4 And FeSO4 In mixture

Important Questions on Redox Reactions

Learn and Prepare for any exam you want !

100 mL solution of FeC₂O₄ And FeSO₄ Are completely oxidised by 60 mL of 0.02M KMnO₄ In acid medium the resulting solution is then reduced by Zn + dil HCl.

The reduced solution is again oxidised completely by 40 mL of 0.02M KMnO₄. Calculate normality of FeC₂O₄ And FeSO₄ In mixture