Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 8

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Which of the following chemical reactions depicts the oxidizing behaviour of $H_{2} {SO}_{4}$ ?

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Important Questions on Redox Reactions

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 9

Consider the following reaction:

{xMnO}_{4}^{-} + {yC}_{2} O_{4}^{2 -} + {zH}^{+} \to {xMn}^{2 *} + 2 {yCO}_{2} + \frac{z}{2} H_{2} O

The values of

x, y

and

z

in the reaction are, respectively:

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 10

Among the given reactions, Which reaction is an example of a redox reaction?

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 11

Among the following, the number of elements showing only one non-zero oxidation state is

O, F, Cl, N, P, Sn, Tl, Na, Ti

.

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 13

Standard electrode potential data are used for understanding the stability of an oxidant in a redox titration. Some half reactions and their standard potentials are given below:

{MnO}_{4}^{-} (aq) + 8 H^{+} (aq) + 5 e^{-} \to {Mn}^{2 +} (aq) + 4 H_{2} O (l); E ° = 1.51 V {Cr}_{2} {O_{7}}^{2 -} (aq) + 14 H^{+} (aq) + 6 e^{-} \to 2 {Cr}^{3 +} (aq) + 7 H_{2} O (l); E ° = 1.38 V {Fe}^{3 +} (aq) + e^{-} \to {Fe}^{2 +} (aq); E ° = 0.77 V {Cl}_{2} (g) + 2 e^{-} \to 2 {Cl}^{-} (aq); E ° = 1.40 V

Identify the only incorrect statement regarding the quantitative estimation of aqueous

Fe ({NO}_{3})_{2}

.

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 15

Which of the following reaction is possible at the anode?

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 16

For a cell given below:

$\underline{Ag | {Ag}^{+} |} \underset{+}{| {Cu}^{2 +} | Cu}$

${Ag}^{+} + e^{-} ⟶ Ag$ $E ° = x$

${Cu}^{2 +} + 2 e^{-} ⟶ Cu$ , $E ° = y$

The value of $E °_{cell}$ is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 17

Given

E °_{\frac{{Cr}^{3 +}}{Cr}} = - 0.74 V; E °_{\frac{{MnO}_{4}^{-}}{{Mn}^{2 +}}} = 1.51 V; E °_{\frac{{Cr}_{2} {O_{7}}^{2 -}}{{Cr}^{3 +}}} = 1.33 V; E °_{\frac{{Cl}_{2}}{{Cl}^{-}}} = 1.36 V

Based on the data given above, the strongest oxidising agent will be

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Alpha Question Bank for Engineering: Chemistry>Chapter 6 - Redox Reactions>Exercise-3>Q 18

What will occur if a block of copper metal is dropped into a beaker containing a solution of 1 M

Z n S O_{4}

?