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magikalcb

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  1. magikalcb
    Given: 1) 2K2Cr2O7 + 8H2SO4+3C2H5OH --->2Cr2(SO4)3+2K2SO4+ 3 CH3COOH + 11 H2O 2) K2Cr2O7 + 6 KI + 7 H2SO4 ---> Cr2(SO4)3 + 4 K2SO4 + 3 I2 +7H2O 3) I2 + 2 Na2S2O3 ---> 2 NaI + Na2S4O6 10mL of 0.0025 M K2Cr2O7 Initial Volume of Na2S203 25mL of .0010M Na2S203 final volume of Na2S203 12.39mL of .0010M Na2S203 How many moles of Na2S2O3 reacted in reaction 3. How many moles of K2Cr2O7 that reacted with the ethanol in reaction 1.
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