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Akif posted an Question
November 21, 2020 • 15:33 pm 30 points
  • IIT JAM
  • Chemistry (CY)

What volume of 0.40 m na,s,o, would be required to react with the l, liberated by adcing excess of kl to 50 ml of 0.20 m cuso, solution ? 5 moil at@eduincle.com

mine's answers is coming 12.5 ml but it is given 25 ml in answer .The process which I did was first I estimated out the amount of iodine liberated by reacting copper with KI and then using the amount of Iodine liberated I calc out the volume of Na2S2O3 but i m not getting the answer...

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    Dinesh khalmaniya 1 best-answer

    Meq. of Na2S2O3 = Meq .of CuSO4 V x0.4x1=50x0.2x1 V = 25 mL

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    please elaborate it sir

    eduncle-logo-app

    what do you have doubt?? it's simply formula base question

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