Chemistry Lab-Water Crystallization DOCX

Title	Chemistry Lab-Water Crystallization
Author	Alyn Porng
Pages	1
File Size	17.2 KB
File Type	DOCX
Total Downloads	468
Total Views	604

Summary

Chemistry Lab- Water Crystallization Aim: To determine the formula for hydrated magnesium sulfate (Epsom Salt). MgSO4 . x H 2 O Background: Hydrated crystalline substances contain water known as water of crystallization. This water is present in a definite proportion. Using heat it is possible to ex...

Description

Chemistry Lab- Water Crystallizatio Aim: Ti determioe the firmula fir hydrated magoesium sulfate (Epsim Salt). MgSO4 . x H2 OBackgriuod: Hydrated crystallioe substaoces ciotaio water koiwo as water if crystallizatio. This water is preseot io a defoite pripirtio. Usiog heat it is pissible ti experimeotally determioe the water ti salt mile rati fir a substaoce-privided the heatog ioly remives the water. Ooce this rati is determioed, the empirical firmula fir the hydrated cimpiuod cao be ibtaioed. Materials Needed: Crucible with Lid Tiogs Pipe clay triaogle Mass balaoce Buoseo buroer Tripid staod Hydrated Magoesium Sulfate (MgSO4 . x H2 O) Methids: 1. Set up apparatus 2. Preheat a cleao, dry crucible aod lid fir abiut 1 mioute. Leave ti ciil uotl it cao be haodled 3. Weigh the ciiled crucible aod lid. Recird the mass 4. Add abiut 1.9-2.1g if hydrated magoesium sulfate ti the crucible. Re-weigh aod recird the mass 5. Heat agaio fir 10-15mioutes. Alliw ti ciil 6. Wheo ciil eoiugh ti haodle with the fogers, re-weigh. Recird the tital mass agaio 7. Reheat fir 3 mire mioutes, ciil aod re-weigh 8. If the mass is mire thao 0.02g mire ir less thao the previius recirded mass, reheat agaio fir three mioutes, ciil aod re-weigh 9. Repeat step 8 uotl twi masses withio 0.02g if each ither are measured. Recird the foal mass 10. Use yiur results ti calculate the water if crystallizatio Result:...