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2 Fe + 6 HCl = 3 H2 + 2 FeCl3
H2S + H2SO3 = S + H2O =>
2 H2S + H2SO3 = 3 S + 3 H2O
S2H5 + O2 = SO2 + H2O =>
4 S2H5 + 13 O2 = 8 SO2 + 10 H2O
Cr2O4{-} + C2H5OH + H{+} = Cr{3+} + CH3CHO + H2O =>
2 Cr2O4{-} + C2H5OH + 14 H{+} = 4 Cr{3+} + CH3CHO + 8 H2O
Ca(OH)2 + H3PO4 = Ca3(PO4)2 + H2O =>
3 Ca(OH)2 + 2 H3PO4 = Ca3(PO4)2 + 6 H2O
NH4OH(aq) + H2SO4(aq) = H2O(l) + (NH4)2SO4(aq) =>
2 NH4OH(aq) + H2SO4(aq) = 2 H2O(l) + (NH4)2SO4(aq)
Au2S3 + H2 = Au + H2S =>
Au2S3 + 3 H2 = 2 Au + 3 H2S
Na + H2O = H2 + NaOH =>
2 Na + 2 H2O = H2 + 2 NaOH
KClO3 + S = KCl + SO2 =>
2 KClO3 + 3 S = 2 KCl + 3 SO2
KBr + Pb(NO3)2 = KNO3 + PbBr2 =>
2 KBr + Pb(NO3)2 = 2 KNO3 + PbBr2
Cr2O2{2-} + C2H5OH = Cr{3-} + CH3CHO + H2O + H{+} =>
Cr2O2{2-} + 4 C2H5OH = 2 Cr{3-} + 4 CH3CHO + 2 H2O + 4 H{+}
NaOH() + H2SO3() = NaHSO3() + H2O() =>
NaOH() + H2SO3() = NaHSO3() + H2O()
(NH4)2Cr2O7 = Cr2O3 + N2 + H2O =>
(NH4)2Cr2O7 = Cr2O3 + N2 + 4 H2O
N2 + O2 = NO =>
N2 + O2 = 2 NO
Fe + HCl = HFeCl4 + H2 =>
2 Fe + 8 HCl = 2 HFeCl4 + 3 H2
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
Ca3(PO4)2 + H2SO4 = CaSO4 + Ca(H2PO4)2 =>
Ca3(PO4)2 + 2 H2SO4 = 2 CaSO4 + Ca(H2PO4)2
Na + O2 = Na2O =>
4 Na + O2 = 2 Na2O
Mg3N2() + H2O() = Mg(OH)2() + NH3() =>
Mg3N2() + 6 H2O() = 3 Mg(OH)2() + 2 NH3()
Mn(NO3)2 + PbO2 + HNO3 = HMnO4 + Pb(NO3)2 + H2O =>
2 Mn(NO3)2 + 5 PbO2 + 6 HNO3 = 2 HMnO4 + 5 Pb(NO3)2 + 2 H2O
C + O2 = CO2 =>
C + O2 = CO2
H{+} + IO3{-} + I{-} = I3{-} + H2O =>
6 H{+} + IO3{-} + 8 I{-} = 3 I3{-} + 3 H2O
Fe + Ni(NO3)2 = Fe(NO3)3 + Ni =>
2 Fe + 3 Ni(NO3)2 = 2 Fe(NO3)3 + 3 Ni
Bi(NO3)3 + NH3 + H2O = Bi(OH)3 + NH4NO3 =>
Bi(NO3)3 + 3 NH3 + 3 H2O = Bi(OH)3 + 3 NH4NO3
H3PO4() + BaCO3() = Ba3(PO4)2() + H2O() + CO2() =>
2 H3PO4() + 3 BaCO3() = Ba3(PO4)2() + 3 H2O() + 3 CO2()
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
HC2H3O2 + Ca(OH)2 = Ca(C2H3O2)2 + H2O =>
2 HC2H3O2 + Ca(OH)2 = Ca(C2H3O2)2 + 2 H2O
Cr2O7{-2} + H{+} + {-} = Cr{+3} + H2O =>
Cr2O7{-2} + 14 H{+} + 6e = 2 Cr{+3} + 7 H2O
Na3PO4 + Ca(NO3)2 = NaNO3 + Ca3(PO4)2 =>
2 Na3PO4 + 3 Ca(NO3)2 = 6 NaNO3 + Ca3(PO4)2
O3 + HNO3 = HO3 + NO3 =>
O3 + HNO3 = HO3 + NO3
Cl2 + KBr = KCl + Br2 =>
Cl2 + 2 KBr = 2 KCl + Br2
Cr2O2{-} + H2O2 + OH{-} = CrO4{2-} + H2O =>
2 Cr2O2{-} + 9 H2O2 + 6 OH{-} = 4 CrO4{2-} + 12 H2O
CH4 + O2 = H2O + CO2 =>
CH4 + 2 O2 = 2 H2O + CO2
CuO + HCl = CuCl2 + H2O =>
CuO + 2 HCl = CuCl2 + H2O
As2S3(s) + O2(g) = As2O3(s) + SO2(g) =>
2 As2S3(s) + 9 O2(g) = 2 As2O3(s) + 6 SO2(g)
C2H5OH + O2 = C2H4O2 + H2O =>
C2H5OH + O2 = C2H4O2 + H2O
CaCl2 + K3PO4 = Ca3(PO4)2 + KCl =>
3 CaCl2 + 2 K3PO4 = Ca3(PO4)2 + 6 KCl
NaOH + H2SO4 = Na2SO4 + H2O =>
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
C2H4 + O2 = CO2 + H2O =>
C2H4 + 3 O2 = 2 CO2 + 2 H2O
CaC2 + HCl = CaCl2 + C2H2 =>
CaC2 + 2 HCl = CaCl2 + C2H2
CaCO3 + HCl = CaCl2 + CO2 + H2O =>
CaCO3 + 2 HCl = CaCl2 + CO2 + H2O
CaC2 + HCl = CaCl2 + C2H2 =>
CaC2 + 2 HCl = CaCl2 + C2H2
Na() + H2O() = NaOH() + H2() =>
2 Na() + 2 H2O() = 2 NaOH() + H2()
Fe + O2 = Fe2O3 =>
4 Fe + 3 O2 = 2 Fe2O3
KOH + Br2 = KBrO3 + KBr + H2O =>
6 KOH + 3 Br2 = KBrO3 + 5 KBr + 3 H2O
CaCO3 + HCl = CaCl2 + CO2 + H2O =>
CaCO3 + 2 HCl = CaCl2 + CO2 + H2O
CaO + C = CaC2 + CO =>
CaO + 3 C = CaC2 + CO
C3H6O3 = CO2 + CH4 =>
2 C3H6O3 = 3 CO2 + 3 CH4
NH4Cl + Ca(OH)2 = CaCl2 + NH3 + H2O =>
2 NH4Cl + Ca(OH)2 = CaCl2 + 2 NH3 + 2 H2O
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