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Consider these two entries from a fictional table of standard reduction potentials.

X3++3e−⟶X(s)o=−2.11 V

Y3++3e−⟶Y(s)o=−0.22 V

What is the standard potential of a galvanic (voltaic) cell where X is the anode and Y is the cathode?

ocell=
V

Respuesta :

Answer:

1.89 V

Explanation:

To calculate the standard cell potential, subtract the reduction potential of the anode from the reduction potential of the cathode.

So for your calculation,

-0.22 V - (-2.11 V)= 1.89 V

In the voltaic cell, current is produced by a  sponteanous chemical reaction. The standard cell potential here is 1.89 V.

What is a voltaic cell?

A voltaic cell is a cell that produces current by a sponteanous chemical reaction. We are told here that X is the anode and Y is the cathode.

Now;

E°cell = E°cathode - E°anode

E°cell = (−0.22 V) - (−2.11 V) = 1.89 V

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