(1)K2Cr3O7 +KI + H3PO4=K3PO4 +I2 + H2O + CrPO4(2)Cu2S +HNO3=NO +Cu(NO3)2+ H2SO4(3)FeS + H2SO4 = Fe2(SO4)3 + SO2 + H2O(4)NaSx + NaClO + NaOH =Na2SO4 + NaCl + H2O(5)An +B^(x-)=A^(y-) + B^(m)(6)Cl^(m) + OH^(-) =ClO^(n-) +Cl^(-) +H2O(7)HClOm + Pn +H2O =

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(1)K2Cr3O7+KI+H3PO4=K3PO4+I2+H2O+CrPO4(2)Cu2S+HNO3=NO+Cu(NO3)2+H2SO4(3)FeS+H2SO4=Fe2(SO4)3+SO2+H2O(4

(1)K2Cr3O7 +KI + H3PO4=K3PO4 +I2 + H2O + CrPO4(2)Cu2S +HNO3=NO +Cu(NO3)2+ H2SO4(3)FeS + H2SO4 = Fe2(SO4)3 + SO2 + H2O(4)NaSx + NaClO + NaOH =Na2SO4 + NaCl + H2O(5)An +B^(x-)=A^(y-) + B^(m)(6)Cl^(m) + OH^(-) =ClO^(n-) +Cl^(-) +H2O(7)HClOm + Pn +H2O =
(1)K2Cr3O7 +KI + H3PO4=K3PO4 +I2 + H2O + CrPO4
(2)Cu2S +HNO3=NO +Cu(NO3)2+ H2SO4
(3)FeS + H2SO4 = Fe2(SO4)3 + SO2 + H2O
(4)NaSx + NaClO + NaOH =Na2SO4 + NaCl + H2O
(5)An +B^(x-)=A^(y-) + B^(m)
(6)Cl^(m) + OH^(-) =ClO^(n-) +Cl^(-) +H2O
(7)HClOm + Pn +H2O = HCl + H3PO4
后面几道是带未知数的 有几道写几道把
第一提 是 K2Cr2O7

(1)K2Cr3O7 +KI + H3PO4=K3PO4 +I2 + H2O + CrPO4(2)Cu2S +HNO3=NO +Cu(NO3)2+ H2SO4(3)FeS + H2SO4 = Fe2(SO4)3 + SO2 + H2O(4)NaSx + NaClO + NaOH =Na2SO4 + NaCl + H2O(5)An +B^(x-)=A^(y-) + B^(m)(6)Cl^(m) + OH^(-) =ClO^(n-) +Cl^(-) +H2O(7)HClOm + Pn +H2O =
K2Cr3O7应该是K2Cr2O7吧
3K2Cr2O7 +18KI + 14H3PO4=2K3PO4 +9I2 + 21H2O + 6CrPO4
(2)3Cu2S +22HNO3=10NO +6Cu(NO3)2+ 3H2SO4+16H2O
(3)2FeS +10 H2SO4 = Fe2(SO4)3 + 9SO2 + 10H2O
(4)Na2Sx + (3x+1)NaClO + (2x-2)NaOH =xNa2SO4 + (3x+1)NaCl + (x-1)H2O(7)5nHClOm + 2mPn +3mnH2O = 5nHCl + 2mnH3PO4
56题无法理解