Identify the element oxidized, theelement reduced, the oxidizing agent and the r

Question

Identify the element oxidized, theelement reduced, the oxidizing agent and the reducingagent in each unbalanced redox equation. a) MnO2(s) + HCl(aq) ---->MnCl2(aq) + Cl2(g) +H2O(l) b) Cu(s) + HNO3(aq)------>Cu(NO3)2(aq) +NO2(g) + H2O(l) c) P(s) + HNO3(aq) + H2O(l)------> NO(g) + H3PO4(aq) d) Bi(OH)3(s) + Na2SnO2(aq)-------> Bi(s) +Na2SnO3(aq) +H2O(l) Identify the element oxidized, theelement reduced, the oxidizing agent and the reducingagent in each unbalanced redox equation. a) MnO2(s) + HCl(aq) ---->MnCl2(aq) + Cl2(g) +H2O(l) b) Cu(s) + HNO3(aq)------>Cu(NO3)2(aq) +NO2(g) + H2O(l) c) P(s) + HNO3(aq) + H2O(l)------> NO(g) + H3PO4(aq) d) Bi(OH)3(s) + Na2SnO2(aq)-------> Bi(s) +Na2SnO3(aq) +H2O(l)

Explanation / Answer

In oxidation - reduction reactions, one species isoxidized (reducing agent) at the expence of reduction of anotherspecies (oxidizing agent) a) In this reaction, MnO2(s),(Mn+4) is reduced to MnCl2(aq) , (Mn+2) hence MnO2(s) is oxidizing agent. And the Cl- (aq) isoxidized to Cl2 (g) , it is reducing agent b) Cu(0) ........> Cu(+2)   , oxidatation ,reducing agent       ,[the numbers inbrackets indicates oxidation states]     N (+5) ..........> N(+2)   ,reduction , oxidizing agent c) P (0) ...........> P(+5) , oxidatation, reducing agent     N (+5) ..........> N(+2)   ,reduction , oxidizing agent d) Bi (+3) ..........> Bi(0) ,oxidatation , reducing agent      Sn (+2) ...........> Sn (+4), reduction , oxidizing agent

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