Which is sometimes also written as: Part A Calculate the standard potential for

Question

Which is sometimes also written as:

Part A

Calculate the standard potential for the following galvanic cell:

Express your answer to three significant figures and include the appropriate units.

Part B

In the context of the nickel-silver cell described in Part A, match each of the following descriptions to the anode or cathode.

Drag the appropriate items to their respective bins.

Cathode or Anode

a) Ni b) Ag c) gain mass d) losses mass e) positive electrode f) negative electrode g) attracts electrons h)stronger reducing agent.

Reduction half-reaction E? (V ) Ag+(aq)+e??Ag(s) 0.80 Cu2+(aq)+2e??Cu(s) 0.34 Ni2+(aq)+2e??Ni(s) ? 0.26 Fe2+(aq)+2e??Fe(s) ? 0.45 Zn2+(aq)+2e??Zn(s) ? 0.76

Explanation / Answer

A.

Ecell = E cathode - E anode

Ecell = E Ag - ENi

Ecell = 0.80 - (-0.26) = + 1.06

B.a) Ni b) Ag c) gain mass d) losses mass e) positive electrode f) negative electrode g) attracts electrons h)stronger reducing agent.

Cathode: Ag, gain mass, attracts electrons , positive electrode, attracts electrons

Anode: Ni ,  losses mass, negative electrode, stronger reducing agent

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