A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C .

The standard potential of the cell is 0.77 V

Explanation:

We know that:

The substance having highest positive reduction potential will always get reduced and will undergo reduction reaction.

The half reaction follows:

Oxidation half reaction:

Reduction half reaction:       ( × 2)

To calculate the of the reaction, we use the equation:

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

Putting values in above equation follows:

Hence, the standard potential of the cell is 0.77 V

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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