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Mole concept and stoichiometry

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in Chemistry by (20 points)
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0.5g of fuming H2SO4 oleum is diluted with 100mL of water. This solution is completely neutralised by 26.7ml of 0.4N NaOH. The correct statement is/are

Solve Q20 which is Multiple Correct answer question.

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1 Answer

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Answer: Correct option is (1) and (2) i.e 

Mass of SO3 is 0.104g and % of free SO3 is 20.6

Explanation: SO3 + 2NaOH → Na2SO4 + H2O

percentage of free SO3

Mass of SO3 and percentage of free SO3

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