Some amount of "20V" H_(2)O_(2) is mixed with excess of acidified solu – InterviewSolution

1.	Some amount of "20V" H_(2)O_(2) is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N Na_(2)S_(2)O_(3) for titration. The mass of K_(2)Cr_(2)O_(7) needed to oxidise the above volume of H_(2)O_(2) solution is :
Answer» 3.6 g 0.8 g 4.2 g 0.98 g Answer :D

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