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Classify the following redox reactions: ...

Classify the following redox reactions:
a. `N_(2)(g)+O_(2)(g)rarr 2NO(g)`
b. `2Pb(NO)_(3)(s)rarr2PbO(s)+2NO_(2)(g)+(1)/(2)O_(2)(g)`
c. `NaH(s)H_(2)O(l)rarr NaOH(aq)+H_(2)(g)`
d. `2NO_(2)(g)+2overset(ө)OH(aq)rarrNO_(2)^(ө)(aq)+NO_(3)^(ө)(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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