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Identify the substance oxidised substanc...

Identify the substance oxidised substance reduced, oxidising agent, and reducing agent for each of the following reactions:
a. `2AgBr(s) + C_(6)H_(6)O_(2)(aq) rarr2Ag(s) + 2HBr(aq) + C_(6)H_(4)O_(2)(aq)`
b. `HCHO(l) + 2[Ag(NH_(3))_(3)]^(o+) + 3 overset(Θ)(OH)(aq) rarr 2Ag(s) + HCOO^(Θ)(aq) + 4NH_(3)(aq) + 2H_(2)O(l)`
c. `HCHO(l)+ 2Cu^(2+)(aq) + 5overset(Θ)(OH) (aq) rarr Cu_(2)O(s)+ HCOO^(Θ)(aq) + 3H_(2)O(l)`
d. `N_(2)H_(4)(l) + 2H_(2)O_(2)(l) rarrN_(2)(g) + 4H_(2)O(l)`
d. `Pb(s) + PbO_(2)(s) + 2H_(2)SO_(4)(aq) rarr 2PbSO_(4)(s)+2H_(2)O(l)`

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Identify the substance oxidised and reduced, oxidising agent and reducing agent for each of the following reactions (a) 2AgBr(s)toC_(6)H_(6)O_(2)(aq)to2Ag(s)+2HBr(aq)+C_(6)H_(4)O_(2)(aq) (b) HCHO(l)+2[Ag(NH_(3))_(2)]^(+)(aq)+3OH^(-)(aq)to2Ag(s)+HCOO^(-)(aq)+4NH_(3)(aq)+2H_(2)O(l) (c ) HCHO(l)+2Cu^(2+)(aq)+5OH^(-)(aq)toCu_(2)O(s)+HCOO^(-)(aq)+3H_(2)O(l) (d) N_(2)H_(4)(l)+2H_(2)O_(2)(l)toN_(2)(g)+4H_(2)O(l) Pb(s)+PbO_(2)(s)+2H_(2)SO_(4)(aq)to2PbSO_(4)(s)+2H_(2)O(l)

Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions : a) 2AgBr(s)+C_(6)H_(6)O_(2)(aq)to2Ag(s)+2HBr(aq)+C_(6)H_(4)O_(2)(aq) b) HCHO(l)+2[Ag(NH_(3))_(2))^(+)(aq)+3OH^(-)(aq)to2Ag(s)+HCOO^(-)(aq)+4NH_(3)(aq)+2H_(2)O(l) c) HCHO(l)+2Cu^(2+)(aq)+5OH^(-)(aq)toCu_(2)O(s)+HCOO^(-)(aq)+3H_(2)O(l) d) N_(2)H_(4)(l)+2H_(2)O_(2)(l)toN_(2)(g)+4H_(2)O(l) e) Pb(s)+PbO_(2)(s)+2H_(2)SO_(4)(aq)to2PbSO_(4)(s)+2H_(2)O(l)