Consider the reaction : H 2 SO 3 aq + Sn aq 4 + + H 2 O l ⁡ → Sn aq 2 + + HSO 4 aq - + 3 H aq + Which of the following statements is correct ?

H 2 SO 3 is the reducing agent because it undergoes oxidation

Sn 4 + is the oxidizing agent because it undergoes oxidation

Sn 4 + is the reducing agent because it undergoes oxidation

H 2 SO 3 is the reducing agent because it undergoes reduction

HARD

Earn 100

Choose the correct statement.

50% studentsanswered this correctly

Important Questions on Redox Reactions and Electrochemistry

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

(a) H_{2} O_{2} + O_{3} \to H_{2} O + 2 O_{2}

{(b) H}_{2} O_{2} + A g_{2} O \to 2 A g + H_{2} O + O_{2}

Role of hydrogen peroxide in the above reactions is respectively:

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Which intermolecular force is most responsible in allowing xenon gas to liquefy?

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

The pair of compounds that can exist together is:

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

A filter paper soaked in salt

X

turns brown when exposed to

{HNO}_{3}

vapor. The salt

X

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Consider the reaction :

H_{2} {SO}_{3 (aq)} + {Sn}_{(aq)}^{4 +} + H_{2} O_{(l)} \to {Sn}_{(aq)}^{2 +} + {HSO}_{4 (aq)}^{-} + 3 H_{(aq)}^{+}

Which of the following statements is correct ?

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Which of the following statement is incorrect regarding the equation

MeCHO + {[Ag {({NH}_{3})}_{2}]}^{+} + \bar{O} H ⟶ {MeCOO}^{-} + Ag

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

At very high pressures, the compressibility factor of one mole of a gas is given by:

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are respectively:

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

How many electrons are involved in the following redox reaction ?

{Cr}_{2} O_{7}^{2 -} + {Fe}^{2 +} + C_{2} O_{4}^{2 -} \to {Cr}^{3 +} + {Fe}^{3 +} + {CO}_{2}

(Unbalanced)

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

For a linear plot of

\log (\frac{x}{m})

versus

\log p

in a Freundlich adsorption isotherm, which of the following statements is correct? (

k

and

n

are constants)

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

{SO}_{2} + 2 HS \to 3 S + 2 H_{2} O

This equation represents preparation of sulphur sol by

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Which among the following compounds does not act as a reducing agent?

MEDIUM

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Strongest reducing agent among the following is

(i) ${Na}^{+} + e^{-} \to {Na}_{(S)} - 2.7 E^{Θ} / v$

(ii) ${Al}^{3 +} + 3 e^{-} \to {Al}_{(S)} - 1.66 E^{θ} / v$

(iii) $F_{2 (g)} + 2^{e -} \to 2 F^{-} + 2.87 E^{O} / v$

(iv) $2 H_{2} O + 2 e^{-} \to F_{2 (g)} + 2 {OH}^{-} {}_{(9 g)}- 0.83 E^{Θ} / v$

HARD

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

The redox reaction among the following is:

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Which of the following equation depicts the oxidizing nature of

H_{2} O_{2}

HARD

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

A compound '

X

' is a weak acid and it exhibits colour change at

pH

close to the equivalence point during neutralization of

NaOH

with

{CH}_{3} COOH

. Compound '

X

' exists in ionized form in basic medium. The compound '

X

' is

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Which of the following is not true for oxidation?

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Initially, the root-mean-square (RMS) velocity of

N_{2}

molecules at certain temperature is

u

. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new RMS velocity will be:

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

In which of the following reactions

H_{2} O_{2}

acts as a reducing agent ?

(a) H_{2} O_{2} + 2 H^{+} + 2 e^{-} \to 2 H_{2} O

(b) H_{2} O_{2} - 2 e^{-} \to O_{2} + 2 H^{+}

(c) H_{2} O_{2} + 2 e^{-} \to 2 {OH}^{-}

(d) H_{2} O_{2} + 2 {OH}^{-} - 2 e^{-} \to O_{2} + 2 H_{2} O

EASY

Chemistry>Physical Chemistry>Redox Reactions and Electrochemistry>Oxidation and Reduction

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

Choose the correct statement.

Important Questions on Redox Reactions and Electrochemistry

Learn and Prepare for any exam you want !