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Suggest a scheme of classification of th...

Suggest a scheme of classification of the following redox reactions
(a) `N_(2) (g) + O_(2) (g) to 2 NO (g)`
(b) `2Pb (NO_(3))_(2) (s) to 2 PbO(s) + 4 NO_(2) (g) + O_(2)(g)`
(c) `NaH(s) + H_(2)O(I) to NaOH (aq) + H_(2)(g)`
(d) `2 NO_(2) (g) + 2OH^(-) (aq) to NO_(2)^(-) (aq) + NO_(3)^(-) (aq) + H_(2) O(l)`

Text Solution

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a. Combination redox reaction: `N_(2) and O_(2)` combines together to give `NO`( nitric oxide).
b. Decomposition redox(nitric oxide): `Pb(NO_(3))_(2)`( lead nitrate) breaks into three components.
c. Displacement redox reaction: Hydrogen of `H_(2)O` is displaced by `H^(ө)`( hydride ion)into `H_(2)` gas.
d. Disproporationation redox reaction: `NO_(2)(+4 "oxidation state")` disproportionates into `NO_(2)^(ө)(+3"oxidation state")` and `NO_(2)^(ө)(+5"oxidation state")`.
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