According to the electrochemical theory of rusting, at anodic spots Fe - Fe^2+ + 2e- and at cathodic spots O2 + 4H+ + 4

Question

According to the electrochemical theory of rusting, at anodic spots Fe -> Fe^2+ + 2e- and at cathodic spots O2 + 4H+ + 4e- -> 2H2O. Which statement is correct?

Accepted Answer

The H+ ions needed at the cathode come mainly from dissolved CO2 (carbonic acid) in the water film

Answer

Oxidation of iron takes place at the cathodic spots

Answer

Rusting is faster when dissolved oxygen is removed from the water film

Answer

Rust is deposited exactly at the anodic spot where iron dissolves

According to the electrochemical theory of rusting, at anodic spots $Fe Fe X^{2 +} + 2 e X^{-}$ and at cathodic spots $O X_{2} + 4 H X^{+} + 4 e X^{-} 2 H X_{2} O$ . Which statement is correct?

Answer: B

More questions on Corrosion and its prevention

According to the electrochemical theory of rusting, at anodic spots Fe​FeX2++2eX− and at cathodic spots OX2​+4HX++4eX−​2HX2​O. Which statement is correct?

Answer: B

More questions on Corrosion and its prevention

According to the electrochemical theory of rusting, at anodic spots $Fe Fe X^{2 +} + 2 e X^{-}$ and at cathodic spots $O X_{2} + 4 H X^{+} + 4 e X^{-} 2 H X_{2} O$ . Which statement is correct?