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Akif Asked a Question
November 21, 2020 10:03 ampts 30 pts
  • 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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  • Priyanshu kumar
    25ml
    • cropped2667733813679182461.jpg
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    Priyanshu kumar
    any doubt akif?
  • Dinesh khalmaniya thankyou
    Meq. of Na2S2O3 = Meq .of CuSO4 V x0.4x1=50x0.2x1 V = 25 mL
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    Akif
    please elaborate it sir