Question

(Before you do the experiment) review, in the following equations for familiar reactions, write an R over the reducing agent and an over sent At the right, indicate the change in oxidation mumber per atom for each element whose oxidation number changes. If there is no change, write in "no change in oxidation number Element oxidized Oxidation number increase per atom Oxidation number decrease per atom Element reduced Reaction 2 Al(s) + 3 Cl2(g) → 2 A13+ + 6 CI- Ag + Cl → AgCl(s) Mg(s) + 2 H+ + Mg2+ + H2(g) Cu2+ + H2S(g) → CuS(s) + 2 H+ Ba(s) + 2 H20 Ba²+ + 2 OH + H2(g) 3 Na O2(s) + Cr2O3(s) + H2O + 6 Na+ + 2 Cro.?- + 2 OH H,02(aq) → H,0 + 2 02(g) CO2(g) + H2O + H2CO3(aq) CO2(g) + C(s) + 2 CO(g) HCl(g) + NH3(g) → NH,Cl(s) 2 ZnS(s) + 3 O2(g) → 2 ZnO(s) + 2 SO2(g) 4 H+ + 2 Cl + Mno (s) Mn2+ + Cl2(g) + 2 H20 10 H + SO42- +81 +4 12(s) + H2S(g) + 4 H,0

Answer 1

Elemnt O.N increases Oxidation number Element oxidistd nduced deereases Per ctom Per atom -1 Cl2 3+ # 2ALIS)+301,g)2AL 6c +3 AL R #Agt + c Ag ce (s) (No Chang) Mgs) M -1 Ht 2Ht +2 M9 R Cu2t Hs () No Change # Cusy 2Ht Ba (s) + 2H,0 Bat+ 20H + Hlg) Ba +2 H - 1 3Na,02 (s) +Cr203 (s)+0-6Nat +2Croy +20H Cx +3 R H202 (ay) H20+1202 8 + R T

(NO change fn oxidalion number. Coply+ H2CO3 Caa) + H,0 H:+1 0z-2 C = +4 HCL (9)NH38 NHYC s) (lo change) # -2 C -+2 C # Co2 9)C(s) 2 Colg) R 72Znols) + 2s02) S 27nsts+302 -2 2 O R 2+ Mn -2 4Ht 2 Mno,(s)-Mn +C,) +2H,0. CL R #lott+ Soy+ 81 4I2(s)+ H2Slg)+4,0. I S -4 +1 O R #