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(a) Most of the metals acquire a dull su...

(a) Most of the metals acquire a dull surface when exposed to air . Name the chemical phenomenon responsible for this process.
(b) State the conditions under which the iron articles get rusted . Design an activity to investigate the conditions necessary for rusting .

Text Solution

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Silver chloride (AgCl) and Silver bromide (AgBr)
`2AgCl overset ("Sunlight")rarr2Ag+Cl_(2)`
`2AgBr overset("Sunlight")rarr2Ag+Br`
Those reactions in which energy is absorbed (in from of heat, light or electricity ) to break down the rectants is cal
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