Learn labeling of oleum and % free SO3, what it means and how to use it

Oleum is considered as a solution of SO3 in H2SO4, which is obtained by passing SO3 in solution of H2SO4. When 100 g sample of oleum is diluted with desired mass of H2O then the total mass of H2SO4 obtained after dilution is known as % labelling in oleum.
#oleum #labelingofoleum #%freeso3
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