Question

In the activity series of metals, metals higher up will serve as (a) cathode (b) anode (c) salt bridge (d) none of the above.

Answer 1

Answer:

cathode will be answer of this

Answer 2

Answer:

In the activity or electrochemical series of metals, metals higher up will serve as cathode.

Therefore, option (a) is correct.

Explanation:

Electrochemical series or activity series is describes the arrangement of elements in order of their increasing electrode potential.

• The reduction potential of an element is taken in reference with electrode potential of hydrogen which is  E₀ = 0 in the electrochemical series,.

• The greater the value of  reduction potential of an element the more easily reduced while, elements with low reduction potential will get easily oxidized.

• Stronger reducing agents have (-ve) standard reduction potential are placed below the hydrogen in the electrochemical series. While, weaker reducing agents with (+ve) standard reduction potential are placed above the hydrogen.

• The metals or elements are placed at the top of the activity series acts as cathode with respect to hydrogen.

• If one element A is above element B in the standard electrode potential series. Then the element B with greater oxidizing power will act as anode. While the element A with greater reducing power will act as cathode.

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