Difference between pt carbon vs carbon carbon cell
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I have immersed two electrodes in a Na2SO4 solution (1M, pH=10), one is a platinum sheet and the other one is a carbon rod, at room temperature.
I measure a voltage difference (+:Pt,-:C) (open circuit voltage) of -0.1 V.
Which redox couples fixe this voltage difference? In my solution, I have Na+, SO4 2-, H2O, N2, O2, H+, OH-, H2, Pt and C. For me, both C an Pt do not react, and so see couples which are in the solution.
When I close the circuit with a resistance my current is about 100 microAmpere, meaning there is an electron transfert but between who and who ? Thank you!
Answer:
Element Carbon (C), Group 14, Atomic Number 6, p-block, Mass 12.011. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, ...
Origin of the name: The name is derived from the Latin ‘carbo’, charcoal
Discovery date: Prehistoric
Allotropes: diamond, graphite, graphene, amorphous, fullerene