Using the data given below find out the strongest reducing agent.

ECr2O72-/Cr3+=1.33V  ;  ECl2/Cl-=1.36VEMn04-/Mn2+=1.51V    ;  ECr3+/Cr=-0.74V

1.  Cl-

2.  Cr

3.  Cr3+

4.  Mn2+

 

Subtopic:  Electrochemical Series |
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Using the data given below find out the strongest oxidizing agent.

ECr2O72-/Cr3+=1.33V  ;  ECl2/Cl-=1.36VEMn04-/Mn2+=1.51V    ;  ECr3+/Cr=-0.74V

1.  Cl-

2.  Mn2+

3.  MnO4-

4.  Cr3+

Subtopic:  Electrochemical Series |
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ECr2O72-/Cr3+=1.33V  ;  ECl2/Cl-=1.36VEMn04-/Mn2+=1.51V    ;  ECr3+/Cr=-0.74V

Using the data given above find out in which option the order of reducing power is correct.

1.  Cr3+ < Cl- < Mn2+ < Cr

2.  Mn2+ < Cl- < Cr3+ < Cr

3.  Cr3+ < Cl- < Cr2O72- < MnO4-

4.  Mn2+ < Cr3+ < Cl- < Cr

 

Subtopic:  Electrochemical Series |
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ECr2O72-/Cr3+=1.33V  ;  ECl2/Cl-=1.36VEMn04-/Mn2+=1.51V    ;  ECr3+/Cr=-0.74V

Use the data given above to find out the most stable ion in its reduced form.

1.  Cl- 

2.  Cr3+ 

3.  Cr

4.  Mn2+ 

Subtopic:  Electrochemical Series |
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From the data given below, the most stable oxidized species is : 
\(\begin{aligned} &E_{{\mathrm{Cr}_2 \mathrm{O}_7^2}/ \mathrm{Cr}^{3+}}^{o} =1.33 \mathrm{~V} ; E_{\mathrm{Cl}_2 / \mathrm{Cl}^{-}}^{o}=1.36 \mathrm{~V} \\ &E_{\mathrm{MnO_{4}}^{-} / \mathrm{Mn}^{2+}}^{o}=1.51 \mathrm{~V} ; E_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{o}=-0.74 \mathrm{~V} \end{aligned}\)

1. Cr3+ 

2. MnO4-

3. Cr2O72-

4. Mn2+ 

Subtopic:  Electrochemical Series |
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The positive value of the standard electrode potential of Cu2+ / Cu indicates that-

a.  This redox couple is a stronger reducing agent than the H+ /H2 couple

b.  This redox couple is a stronger oxidising agent than H+ /H2

c.  Cu can displace H2 from acid.

d.  Cu cannot displace H2 from acid.


1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)

Subtopic:  Electrochemical Series | Electrolytic & Electrochemical Cell |
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Match the items of Column I and Column II on the basis of data given below

Column I

Column II

A. F2

B. Li

C. Au3+

D. Br-

E. Au

F. Li+

G. F-

1. Metal is the strongest reducing agent

2. Metal ion which is the weakest oxidising agent

3. Non-metal which is the best oxidising agent

4. Unreactive metal

5. Anion that can be oxidised by Au3+

6. Anion which is the weakest reducing agent

7. Metal ion which is an oxidising agent

Codes

          A          B        C       D       E       F        G 

1.       3          1         7        5       4        2        6

2.       1          2         3        5       7        4        6

3.       5          4         3        2       6        5        1

4.       4          5         3        2       1        6        7

Subtopic:  Electrochemical Series | Electrode & Electrode Potential |
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Assertion: Cu is less reactive than hydrogen.

Reason: Cu2+/ Cu is negative.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and the reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Assertion is false but the reason is true.

 

Subtopic:  Electrochemical Series |
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Assertion: Copper sulphate can be stored in a zinc vessel.

Reason: Zinc is less reactive than copper.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and the reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Both assertion and reason are false.

Subtopic:  Electrochemical Series |
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