What is 'Cathodic Protection' in the context of un... - Class 12 Chemistry | Canvas Classes

CorrosionElectrochemistry

What is 'Cathodic Protection' in the context of underground pipes?.

Connecting the iron pipe to a more active metal (like Mg or Zn) which acts as the anode and corrodes instead of the iron.

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In a Daniell cell, what happens to the current flow if an external opposing potential ( $E_{ext}$ ) slightly greater than 1.1 V is applied?.

What is the sign of Gibbs Free Energy ( $\Delta G$ ) for a cell reaction to be spontaneous?.

Why is the Standard Hydrogen Electrode (SHE) potential taken as zero?.

Which material is used as the inert electrode in a Standard Hydrogen Electrode (SHE)?.

What defines an Inert Electrode? Give 2 common examples used in JEE problems.