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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
2. a 19" century iron bridge is protected from corrosion by connecting it to a block of metal (sacritificial anode), which is replaced annually. the corrosion o
2. A 19" century iron bridge is protected from corrosion by connecting it to a block of metal (sacritificial anode), which is replaced annually. The corrosion of iron, represented by the chemical equation: 2Fe(s) +2H;O() + O:(g) 2Fe(OH)2 Which of the following metals is best suited as sacrificial anode? a) Ag: Ag' +e ->Ag(s).E°=+0.80 V (b) Cd Cu (d) Mg: Mg +2e Mg(s), E° = -2.36 V Cd +2e+Cd(s), E° =-0.40 V Cu +2 Cu(s), E° = +0.34 V
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Dinesh khalmaniya 1
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Suman Kumar
See this
See Magnesium has very high oxidation potential.
Iron has Lower oxidation potential
Which ever metal has higher oxidation potential than Fe will be used to prevent rusting
please ask if you don't get
Got it Shristy