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Redox Reactions

Short Answer Type

51.

What does positive electrode potential imply?

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52.
Why is it not possible to measure the single electrode potential?

Oxidation and reduction cannot take place alone. Moreover, it is a relative tendency and can be measured w.r.t. a reference electrode only.

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53.

What is electrochemical series?

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54. Copper does not dissolve in H₂SO₄. Why?

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55.

The standard electrode potentials of elements A, B and C are + 0.68, -2 .50 and -0.50 V respectively. Write the correct order of their reducing power.

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56.

The E° of Cu²⁺ | Cu is + 0 . 34 V. What does it signify?

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57.

What is the equivalent mass of the oxidation agent in the reaction

$SO subscript 2 plus space 2 straight H subscript 2 straight O space space rightwards arrow space space space 3 straight S space plus space 2 straight H subscript 2 straight O$