Electrochemistry Question 5
Question 5 - 2024 (27 Jan Shift 2)
Which of the following statements is not correct about rusting of iron?
(1) Coating of iron surface by tin prevents rusting, even if the tin coating is peeling off.
(2) When $pH$ lies above 9 or 10 , rusting of iron does not take place.
(3) Dissolved acidic oxides $SO _2, NO _2$ in water act as catalyst in the process of rusting.
(4) Rusting of iron is envisaged as setting up of electrochemical cell on the surface of iron object.
Show Answer
Answer (1)
Solution
As tin coating is peeled off, then iron is exposed to atmosphere.
