EXPERIMENT6 - Initial Final Obsevations Conclusions Na 2 Co...

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0EXPERIMENT #6: PROPERTIES OF HYDRATES Eliot Sanford Lab Partner: Ranjita Bandi CH 1211-19 Instructor: Shashank Kulkarni Wednesday 3:00-5:50 October 12, 2007
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Experiment 6 Data and Calculations: Properties of Hydrates A. Identification of Hydrates H 2 O Color of residue Water soluble Hydrate Nickel chloride Yes Green Yes Yes Potassium chloride No White Yes Yes Sodium tetraborate Yes White Yes Yes Sucrose Yes Brown No No Calcium Carbonate No White Yes No Barium Chloride Yes White Yes Yes B. Reversibility of Hydration Summarize your observations on CoCl * 6H 2 O: The liquid changed from dark red to violet. Is the dehydration and hydration of CoCl 2 reversible? Yes C. Deliquescence and Efflorescence Mass (sample + glass) Initial
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Unformatted text preview: Initial Final Obsevations Conclusions Na 2 Co 3 *10H 2 O 44.222g 44.222g n/c Anhydrous deliquescence KAl(SO 4 ) 2 *12H 2 O 61.099 61.099 n/c Anhydrous deliquescence CaCl 2 94.570 44.060 Decrease in size Hydrate Efflorescence CuSo 4 62.528 62.528 n/c Anhydrous deliquescence CoCl 2 D. Per Cent Water in a Hydrate Mass of crucible and cover 128.345g Mass of crucible, cover, and solid hydrate unknown 1 128.344g Mass of crucible, cover, and residue 128.932g Calculations and Results Mass of solid hydrate 1.00g Mass of residue .589g Mass of H20 lost .411g Percentage of H20 in the unknown hydrate 41.1% Unknown no. 1...
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