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Experimental Determination of the Hydration Formula of Magnesium Sulfate and Environmental Effects

An experimental approach to determining the hydration formula of magnesium sulfate and its environmental effects.

Claire Mitchell
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ExperimentalDeterminationoftheHydrationFormulaofMagnesiumSulfateandEnvironmentalEffects1.UseyourexperimentaldatatocalculatetheformulaforhydratedMgSO4Answer:Massofcrucible:14.3gThenthemassofhydratedMgS0O4is:22.3-14.3=8.0¢gThemassofanhydrousMgSO4is:20.8—-14.3=6.5¢gSoweremoved8-6.5=1.5gofwaterThereforewehave6.5/(24.305+32.066+15.9994*4)=0.054molesofMgSO4and1.5/(2*1.00794+15.9994)=0.083molesofH20:bycalculationtheratio0.083/0.054~1.5theformulaisthen:3MgS04,2H203.Whymightthemethodusednotbesuitablefordeterminingthewaterofhydrationforallhydrates.Answer:ThismethodisnotalwayssuitablebecausewatersofhydrationcouldcomeoffatdifferenttemperaturesindifferentcompoundsanditisnecessarytoworkatlowtemperatureinordernottodecomnosetheanhvdrideI~StudyXY

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Chemistry

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