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Calculate amount of total H2SO4 when 100 gm 109% labelled Oleum sample is completely destroyed by water ?.

SOLUTION: the amount H2SO4
Originally 109% 100 gm Oleum sample contains 40 gm free SO3 and 60 gram H2SO4
Hence total Wt of H2SO=60 gm +49 gm =109 gm

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