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8 K2Cr2O7 + 6 NaHS + 29 H2SO4 = 8 K2SO4 + 3 Na2SO4 + 8 Cr2(SO4)3 + 32 H2O
Na2S2O3 + Br2 + H2O = Na2SO4 + H2SO4 + HBr =>
Na2S2O3 + 4 Br2 + 5 H2O = Na2SO4 + H2SO4 + 8 HBr
S4N4 = N2 + S8 =>
2 S4N4 = 4 N2 + S8
NH4NO3 = H2O(g) + O2(g) + N2 =>
2 NH4NO3 = 4 H2O(g) + O2(g) + 2 N2
C3H8O3 + O2 = CO2 + H2O =>
2 C3H8O3 + 7 O2 = 6 CO2 + 8 H2O
CuI + KI = KCuI2 =>
CuI + KI = KCuI2
Co(NH3)Cl2 = CoCl2 + NH3 =>
Co(NH3)Cl2 = CoCl2 + NH3
H2O2 + KCl = KClO3 + H2O =>
3 H2O2 + KCl = KClO3 + 3 H2O
B + Mg = BMg =>
B + Mg = BMg
Pb(NO3)2 + NaI = PbI2 + NaNO3 =>
Pb(NO3)2 + 2 NaI = PbI2 + 2 NaNO3
H2O + H2C2O4 = H2CO3 + H =>
2 H2O + H2C2O4 = 2 H2CO3 + 2 H
NF3 = N + F2 =>
2 NF3 = 2 N + 3 F2
N2H6SO4 + CuCl2 + NaOH = N2 + CuCl + NaCl + Na2SO4 + H2O =>
N2H6SO4 + 4 CuCl2 + 6 NaOH = N2 + 4 CuCl + 4 NaCl + Na2SO4 + 6 H2O
C4H10 + H2O = CO2 + H =>
C4H10 + 8 H2O = 4 CO2 + 26 H
COCl2 + CH3COOH = CO2 + HCl + (CH3CO)2O =>
COCl2 + 2 CH3COOH = CO2 + 2 HCl + (CH3CO)2O
Ca + HNO3 = Ca(NO3)2 + NH3 + H2O =>
4 Ca + 9 HNO3 = 4 Ca(NO3)2 + NH3 + 3 H2O
CH3COOC2H5 + H2O = CH3COOH + C2H5OH =>
CH3COOC2H5 + H2O = CH3COOH + C2H5OH
Fe(OH)3 + CH3COOH = Fe(C2H3O2)3 + H2O =>
Fe(OH)3 + 3 CH3COOH = Fe(C2H3O2)3 + 3 H2O
Ai + S = Ai2S =>
2 Ai + S = Ai2S
Sn + NaOH = Na2SnO2 + H2 =>
Sn + 2 NaOH = Na2SnO2 + H2
Te + H2SO4 = Te2(SO4)3 + H2 =>
2 Te + 3 H2SO4 = Te2(SO4)3 + 3 H2
AgCl + NaOH = Ag2O + NaCl + H2O =>
2 AgCl + 2 NaOH = Ag2O + 2 NaCl + H2O
CH3COOH + Na2CO3 = CH3COONa + H2O + CO2 =>
2 CH3COOH + Na2CO3 = 2 CH3COONa + H2O + CO2
H2S + CUO = CUS + H2O =>
H2S + CUO = CUS + H2O
F + Cl2 = FCl =>
2 F + Cl2 = 2 FCl
CH3COOH(ac) + NaOH(ac) = CH3COONa(ac) + H2O(l) =>
CH3COOH(ac) + NaOH(ac) = CH3COONa(ac) + H2O(l)
Co(OH)2 = Co + OH =>
Co(OH)2 = Co + 2 OH
Br2 + O2 = Br2O7 =>
2 Br2 + 7 O2 = 2 Br2O7
Pb + CuCl2 = PbCl2 + Cu =>
Pb + CuCl2 = PbCl2 + Cu
CH3Br + Na = CH3Na + Br =>
CH3Br + Na = CH3Na + Br
Pb(NO3)2 + H2SO4 = PbSO4 + HNO3 =>
Pb(NO3)2 + H2SO4 = PbSO4 + 2 HNO3
(NH4)2(SO4) + Ag(NO3) = (NH4)(NO3) + Ag2(SO4) =>
(NH4)2(SO4) + 2 Ag(NO3) = 2(NH4)(NO3) + Ag2(SO4)
HCN = H + C + N =>
HCN = H + C + N
NaBr + KMnO4 + H2O = Br2 + MnO2 + NaOH + KOH =>
6 NaBr + 2 KMnO4 + 4 H2O = 3 Br2 + 2 MnO2 + 6 NaOH + 2 KOH
Pb(OH)2 + Ca(OH)2 = Ca[Pb(OH)4] =>
Pb(OH)2 + Ca(OH)2 = Ca[Pb(OH)4]
Ca(H2PO4)2 + Na2CO3 = CaCO3 + NaH2PO4 =>
Ca(H2PO4)2 + Na2CO3 = CaCO3 + 2 NaH2PO4
K + N2 = KN3 =>
2 K + 3 N2 = 2 KN3
Cr + SnSO4 = Cr2(SO4)3 + Sn =>
2 Cr + 3 SnSO4 = Cr2(SO4)3 + 3 Sn
Cu(SO4) + KI = CuI + I2 + K2SO4 =>
2 Cu(SO4) + 4 KI = 2 CuI + I2 + 2 K2SO4
Br + O = Br2O7 =>
2 Br + 7 O = Br2O7
Cu(NO3)2 + CuCl2 = Cu(CuCl2)2 + NO3 =>
Cu(NO3)2 + 2 CuCl2 = Cu(CuCl2)2 + 2 NO3
Li + MnO2 = LiMnO2 =>
Li + MnO2 = LiMnO2
Rh + HCl + H2O2 = H3RhCl6 + H2O =>
2 Rh + 12 HCl + 3 H2O2 = 2 H3RhCl6 + 6 H2O
HgNO3 + HCl = HgCl2 + H2O + NO2 =>
HgNO3 + 2 HCl = HgCl2 + H2O + NO2
Cu(NH3)4Cl2 + KCN + H2O = NH3 + NH4Cl + K2Cu(CN)3 + KCNO + KCl =>
2 Cu(NH3)4Cl2 + 7 KCN + H2O = 6 NH3 + 2 NH4Cl + 2 K2Cu(CN)3 + KCNO + 2 KCl
Kl + Pb(NO3)2 = Kl(NO3) + Pb =>
2 Kl + Pb(NO3)2 = 2 Kl(NO3) + Pb
Pb3O4 + C = PbO + CO2 =>
2 Pb3O4 + C = 6 PbO + CO2
CH3COOH + HNO3 = CH3CONO3 + H2O =>
CH3COOH + HNO3 = CH3CONO3 + H2O
Cd + C2H5NS = CdS + C2H5N =>
Cd + C2H5NS = CdS + C2H5N
KBr + AgNO3 + NH3 = AgBr + KNH3NO3 =>
KBr + AgNO3 + NH3 = AgBr + KNH3NO3
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