Identify the correct combination of the following statements P. Hydrogen elect

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Identify the correct combination of the following statements P. Hydrogen electrode is a standard used to measure redox potentials Q. Activation polarization refers to electrochemical processes controlled by reaction sequence at
metal-solution interface R. Potential-pH diagrams can be used to predict corrosion rates of metals S. Cathodic protection can use sacrificial anodes such as magnesium

Options:

A . P, Q and R

B . Q, R and S

C . P, Q and S

D . P, R and S

Answer: Option C

-NA-

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