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Find the % labelling of 100g oleum sampl...

Find the % labelling of 100g oleum sample containing `10g` `SO_(3)`

Text Solution

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`40 g ""SO_(3)` needs `9 g ""H_(2)O`
10 g of `SO_3` needs `(10xx9)/(40)=2.25g` of water
Therefore % labelling of oleum sample `=(100+2.25)=102.25%`.
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