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Updated: May 23, 2025
A sample of pyrolusite weighs 0.2400 gram and is 92.50% pure MnO . The iodine liberated from KI by the manganese dioxide is sufficient to react with 46.24 cc. of Na S O sol. What is the normal value of the thiosulphate? !Answer!:: 0.1105 N. !Answer!: 0.08339 N.
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