Give the chemical formula of oleum ?
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H2S2O7 molar mass 178. 14 g mol
sandesh07:
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what do u mean by this prachee4. Sorry, I didn't understand
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Oleums can be described by the formula ySO3.H2O where y is the total molar sulfur trioxide content. The value of y can be varied, to include different oleums. They can also be described by the formula H2SO4.xSO3 where x is now defined as the molar free sulfur trioxide content. Oleum is generally assessed according to the free SO3 content by mass.
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