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Problem #1: K4Fe(CN)6 + Ce(NO3)4 + KOH ---> Ce(OH)3 + Fe(OH)3 + H2O + K2CO3 + KNO3

Problem #2: K4Fe(CN)6 + H2SO4 + KMnO4 ---> MnSO4 + Fe2(SO4)3 + K2SO4 + HNO3 + CO2 + H2O

Problem #3: go to problem #2 and replace HNO3 with KNO3.

Problem #4: go to problem #2 and replace K2SO4 with KHSO4

Problem #5: CuCNS + KIO3 + HCl ---> HCN + CuSO4 + ICl + H2O + KCl

Problem #6: CuCNS + KIO3 + H3PO4 ---> Cu3(PO4)2 + KH2PO4 + HCN + I2 + KHSO4 + H2O

Problem #7: Cr(NCS)64-(aq) + Ce4+(aq) ---> Cr3+(aq) + Ce3+(aq) + NO3-(aq) + CO2(g) + SO42-(aq) [acidic sol.]

Problem #8: Ce2(SO4)3 + HgSO4 + H2SO4 + HNO3 + CO2 ---> Ce(SO4)2 + Hg2(CN)2 + H2O

Problem #9: As2S3 + Mn(NO3)2 + K2CO3 ---> K3AsO4 + K2SO4 + K2MnO4 + NO + CO2

Problem #10: Pb(N3)2 + Cr(MnO4)2 ---> Cr2O3 + MnO2 + Pb3O4 + NO

Problem #11: Pb(N3)2 + Cr(MnO4)2 ---> Cr2O3 + MnO2 + PbO4 + NO

Problem #12: Pb(N3)2 + Cr(MnO4)2 ---> Cr2O3 + MnO2 + PbO2 + NO

Problem #13: K4Fe(SCN)6 + K2Cr2O7 + H2SO4 ---> Fe2(SO4)3 + Cr2(SO4)3 + CO2 + H2O + K2SO4 + KNO3

Problem #14: K4Fe(SCN)6 + K2Cr2O7 + H2SO4 ---> Fe2(SO4)3 + Cr2(SO4)3 + CO + H2O + K2SO4 + KNO3 (uses five half-reactions)


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