Chem 1411 Water in Hydrate Lab PDF

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Water in Hydrate Lab...

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Water in a Hydrate Lab Report Part I. Prepare and Weight Equipment    

Mass of 100 mL beaker – 45g Mass of Unknown C solid – 2g Mass of 100 mL beaker and unknown hydrate – 47g Mass of weight boat – 26g

Part II. Heating/Dehydration of the Hydrate 

Mass of 100 mL beaker and hydrate after heating – 46g

Part III. Lab Calculations A. Mass 1. Mass of hydrate = 2g 2. Mass of anhydrous salt = 1g 3. Mass of water = (2g of hydrate) – (1g of anhydrous salt) = 1g of H2O 1 g(mass of water) ×100 = 50% of H2O 4. Mass % of water = 2 g(mass of hydrate) B. Hydrate Formula 1 mol H 2 O = 0.0555 mol H2O 1. Moles of water = 1g of H2O (mass of water) × 18.02 g H 2 O 1 mol MgSO 4 2. Moles of anhydrous salt = 1g (mass of anhydrous) × = 0.0083 120.36 g MgSO 4 mol MgSO4 0.0555 3. x = ≈ 6.69 = 7 0.0083 Part IV. Conclusion Once totals of masses and moles were formulated, the final result for value of x equaled to 7. Therefore, the empirical formula of the hydrate would be MgSO4 7H2O....