Galvanic Cell

In a galvanic cell with Fe rod as cathode and Cr as anode and their sulphate salt solutions as electrolytes,if the salt bridge is replaced by a copper wire,then will E°cell drop to zero?why?

SRP of Fe =-0.45V
SRP of Cr = -0.75V

2 Answers

11
Mani Pal Singh ·

E=E0-RT/NF ln[A0/A]

E0=0.3V

I THINK BASICALLY THAT WITH THE CHANGE OF SALT BRIDGE( USED 4 BETTER MOVEMENT OF IONS) WITH A COPPER WIRE THE E0 MAY DROP TO ZERO AS THE CELL WILL BECOME USELESS[1]

I MAY BE WRONG[2]

39
Dr.House ·

here both iron and chromium can displace copper........

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