- Data Table A Percentage Of Water In Alum Hydrate 115 400 Mass Of Beaker And Watchglass Alum Hydrate Before Heating 1 (71.41 KiB) Viewed 23 times
RECYCLE Chemical Waste B. Percentage of Water in an Unknown Hydrate mass of beaker and watchglass + unknown hydrate (before heating) mass of beaker and watchglass mass of unknown hydrate g mass of beaker and watchglass + anhydrous compound 33.760 g (after heating) Percentage of water in the unknown hydrate Average percentage of water UNKNOWN # C. Water of Crystallization in an Unknown Hydrate molar mass of anhydrous compound (AC) (see Instructor) 134.340g 133.1508 mass of water (before heating-after heating) Show the calculation for the percentage of water for trial 1 (see Example Exercise 13.2). Water of crystallization g J26.170 g 125.053g VTT % 125.5608 % 120.37 percentage of water (see Procedure B) percentage of anhydrous compound (AC) Show the calculation for the water of crystallization (see Example Exercise 13.3). g . g/mol % % .g % Formula of hydrate ACA_H₂O
1. Calculate the theoretical percentage of water for the following hydrates. (a) manganese(II) monohydrate, MnSO4 H₂O (b) manganese(II) tetrahydrate, MnSO4-4H₂O 2. An unknown hydrate, AC-XH₂O, has a mass of 1.000 g before heating, and 0.738 g after heating. What is the experimental percentage of water in the hydrate? If the anhydrous compound (AC) has a molar mass of 101 g/mol, what is the water of crystallization (X) and the formula for the hydrate (AC-XH₂O)?upu sulit lectone Water of crystallization THORIES Formula of hydrate AC-_ H₂0
3. A hydrate of nickel(II) chloride, NiCl₂ XH₂O, decomposes to produce 21.8% water. Calculate the water of crystallization (X), and write the formula for the hydrate. Water of crystallization Formula of hydrate NiCl₂ H₂O 4. A different hydrate of nickel(II) chloride, NiCl₂ XH₂O, decomposes to produce 45.5% water. Calculate the water of crystallization (X), and write the formula for the hydrate. Water of crystallization Formula of hydrate NiCl₂_ H₂O 5. (optional) Blue turquoise is an example of a hydrate mineral containing copper; the chemical formula is CuAl6(PO4)4(OH)8 4H₂O. What is the percent water in this semiprecious stone?