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ZnS + 2 H2O = H2S + Zn(OH)2
SiO2 + HNO3 = NO2 + HSiO3 =>
SiO2 + HNO3 = NO2 + HSiO3
C4H6O5 + H2O = CO2 + H2 =>
C4H6O5 + 3 H2O = 4 CO2 + 6 H2
CaO + HNO3 = H2O + Ca(NO3)2 =>
CaO + 2 HNO3 = H2O + Ca(NO3)2
SnI2 + HNO3 = SnO2 + NO + I2 + H2O =>
3 SnI2 + 4 HNO3 = 3 SnO2 + 4 NO + 3 I2 + 2 H2O
O2 + NiS = NiSO4 =>
2 O2 + NiS = NiSO4
C + O2 = CO = =>
2 C + O2 = 2 CO
Pb{+2)+Ni = Pb+Ni{+2} =>
Pb{+2)+Ni = Pb+Ni{+2}
Fe + HCl = FeCl2 + H2 =>
Fe + 2 HCl = FeCl2 + H2
BrO3{-} + S4O6{2-} + H2O = Br{-} + SO4{2-} + H{+} =>
7 BrO3{-} + 3 S4O6{2-} + 9 H2O = 7 Br{-} + 12 SO4{2-} + 18 H{+}
HBr + Co(OH)2 = H2Co + BrOH =>
2 HBr + Co(OH)2 = H2Co + 2 BrOH
As4 + NaClO + H2O = H3AsO4 + NaCl =>
As4 + 10 NaClO + 6 H2O = 4 H3AsO4 + 10 NaCl
Na2(CO3) + H2O = Na2O + H2CO3 =>
Na2(CO3) + H2O = Na2O + H2CO3
LiOH = Li + H2 + O2 =>
2 LiOH = 2 Li + H2 + O2
BaF2 + K3PO4 = Ba3(PO4)2 + K2F2 =>
3 BaF2 + 2 K3PO4 = Ba3(PO4)2 + 3 K2F2
K2CO3 + AuNO3 = KNO3 + Au2CO3 =>
K2CO3 + 2 AuNO3 = 2 KNO3 + Au2CO3
CuBr(s) + HNO3(aq) = Cu(NO3)2(aq) + Br2(g) + NO2(g) + H2O(l) =>
2 CuBr(s) + 8 HNO3(aq) = 2 Cu(NO3)2(aq) + Br2(g) + 4 NO2(g) + 4 H2O(l)
H4P2O7 + LiOH = Li4P2O7 + H2O =>
H4P2O7 + 4 LiOH = Li4P2O7 + 4 H2O
NH4Cl + MgCO3 = NH4CO3 + MgCl =>
NH4Cl + MgCO3 = NH4CO3 + MgCl
SiO2 + HNO3 = NO2 + HSiO3 =>
SiO2 + HNO3 = NO2 + HSiO3
H2O + BeS + KOH = K2[Be(OH)4] + H2S =>
2 H2O + BeS + 2 KOH = K2[Be(OH)4] + H2S
KNO2 + Cl2O7 + KOH = KNO3 + KCl + H2O =>
8 KNO2 + Cl2O7 + 2 KOH = 8 KNO3 + 2 KCl + H2O
Cr2O3 + H2O = Cr(OH)3 =>
Cr2O3 + 3 H2O = 2 Cr(OH)3
CUI + H2O2 + KOH = CU(OH)2 + KIO3 + H2O =>
2 CUI + 7 H2O2 + 2 KOH = 2 CU(OH)2 + 2 KIO3 + 6 H2O
CH3COCl + NaOH = NaCl + CH3COOH =>
CH3COCl + NaOH = NaCl + CH3COOH
HNO2 + H2O = NO2{-} + H3O{+} =>
HNO2 + H2O = NO2{-} + H3O{+}
Al + NaOH + O2H = NaAlO2 + H2 =>
4 Al + 4 NaOH + 2 O2H = 4 NaAlO2 + 3 H2
AgC2H3O2(aq) + SrCl2(aq) = AgCl2(s) + SrC2H3O2 =>
AgC2H3O2(aq) + SrCl2(aq) = AgCl2(s) + SrC2H3O2
X3Y8 + Q2 = Y2Q + XQ2 =>
X3Y8 + 5 Q2 = 4 Y2Q + 3 XQ2
LiHCO3 + HClO = LiClO + H2CO3 =>
LiHCO3 + HClO = LiClO + H2CO3
HNO2(aq) = H{+} + NO3{-} + NO(g) + H2O =>
3 HNO2(aq) = H{+} + NO3{-} + 2 NO(g) + H2O
CsO2(s) + H2O(l) = CsOH(aq) + O2(g) =>
4 CsO2(s) + 2 H2O(l) = 4 CsOH(aq) + 3 O2(g)
C2H5COOH + PCl3 = C2H5CO + POCl2 + HCl =>
C2H5COOH + PCl3 = C2H5CO + POCl2 + HCl
XS + YHNO3 = XH2SO4 + YNO2 + H2O =>
XS + 6 YHNO3 = XH2SO4 + 6 YNO2 + 2 H2O
PF3 + F2 = PF5 =>
PF3 + F2 = PF5
H2NNHCH3 + N2O4 = CO2 + H2O + N2 =>
4 H2NNHCH3 + 5 N2O4 = 4 CO2 + 12 H2O + 9 N2
C2H6O + Cr2O7{-} + H{+} = C2H4O + H2O + Cr{3+} =>
7 C2H6O + 2 Cr2O7{-} + 14 H{+} = 7 C2H4O + 14 H2O + 4 Cr{3+}
Cu(ii) + AgNO3 = Cu(NO3)2 + Ag =>
Cu(ii) + 2 AgNO3 = Cu(NO3)2 + 2 Ag
CHOOH + KOH = H2O + CHOOK =>
CHOOH + KOH = H2O + CHOOK
(NH4)2SO4 + H2S = SO2 + H2O + NH3 =>
3(NH4)2SO4 + H2S = 4 SO2 + 4 H2O + 6 NH3
(d)Fe(s) + O2(g) = Fe2O3(s) =>
4(d)Fe(s) + 3 O2(g) = 2 Fe2O3(s)
Mg2SiO4 + CuI2 = MgI2 + Cu2(SiO4) =>
Mg2SiO4 + 2 CuI2 = 2 MgI2 + Cu2(SiO4)
Na2CrO4 + HCl = Na2Cr2O7 + NaCl + NaOH =>
2 Na2CrO4 + HCl = Na2Cr2O7 + NaCl + NaOH
Br2 + H3PO4 = P + HBrO3 + H2O =>
Br2 + 2 H3PO4 = 2 P + 2 HBrO3 + 2 H2O
K2Cr2O7 + NaNO2 + H2O = Cr2O3 + NaNO3 + KOH =>
K2Cr2O7 + 3 NaNO2 + H2O = Cr2O3 + 3 NaNO3 + 2 KOH
Zn{2e-} = Zn{2+} =>
Zn{2e-} = Zn{2+}
As2S3 + NH3 + H2O2 = (NH4)3(AsO4) + (NH4)2(SO4) + H2O =>
As2S3 + 12 NH3 + 14 H2O2 = 2(NH4)3(AsO4) + 3(NH4)2(SO4) + 8 H2O
SiO2 + HNO3 = NO2 + HSiO3 =>
SiO2 + HNO3 = NO2 + HSiO3
CrO3 = CrO + O2 =>
CrO3 = CrO + O2
FeS + Na2S = Na + Fe2S3 =>
2 FeS + Na2S = 2 Na + Fe2S3
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