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			  2Fe(IO3)3+36HI=2FeI2+19I2+18H2O             | 
                
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			  I2+Na2S=2NaI+S↓             | 
                
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			  3S+6KOH=△=K2SO3+2K2S+3H2O             | 
                
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			  K2SO3+2HNO3=K2SO4+H2O+2NO2↑             | 
                
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			  K2SO4+2C=高温=K2S+2CO2↑             | 
                
          |   | 
			  CO2+Ba(OH)2=BaCO3↓+H2O             | 
                
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			  2BaCO3+2CuSO4+H2O=Cu2(OH)2CO3+2BaSO4+CO2↑             | 
                
          |   | 
			  CO2+Mg=△=MgO+CO             | 
                
          |   | 
			  PdCl2+CO+H2O=Pd↓+2HCl+CO2             | 
                
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			  Pd+4HNO3(浓)=Pd(NO3)2+2NO2↑+2H2O             |