Answer to Composition and Formula of a Hydrate--Pre-Lab Questions 1.) Im writing a formal lab report and I need to explain how we ended up with x ( which was where the 5 is in the formula and our answer was 4.78) I can't remember how we got there and I need to explain it in the lab. By kulei martin. ","mark_as_fav":"Favorito","my_favs":"Mis favoritos","rejected":"Rechazado","remove_fav":"Eliminar favorito","show_all":"Mostrar todo","show_all_comments":"Mostrar todos los comentarios para este hilo. Typically well know hydrate of CuSO4 has a formula CuSO4*5H2O. A formula CuSO4 * H2O does also exist but You will need to fill out, but 'm! var BP_Confirm = {"are_you_sure":"\u00bfEst\u00e1s seguro? Answer to Composition and Formula of a Hydrate--Pre-Lab Questions 1.) #1. A) CuSO, 2 H, 0 B) CuSO4-5 H2O C) CuSO4.5H2O D) CuSO43 H2O upon heating, the empirical formula of the hydrate can be determined. You then place your hydrate into the crucible and weigh them again. A hydrate is any water molecule that are attached to an ionic compound. Question 4 of 10 A sample of a hydrate of copper (II) sulfate is found to contain 36.08% by mass water. To determine the formula of the hydrate compound Copper (II) Sulfate by identifying the amount of water molecules that are attached to a formula unit by evaporating the hydrate in the compound. (All answers must be reported to the proper number of significant digits.) When we heated the compounds, we got a formula of CuSO4 x 6H2O for the copper sulfate, and MgSO4 x 7H2O for the magnesium sulfate. All help is appreciated. Graphically determine both the percentage of water in an unknown hydrate of copper (II) sulfate (CuSO4∙xH2O), and the empirical formula of the hydrate Ktaxon Vanity Make Up Table, Regina University molecules in solution good,: // theoretical ) Moles of water molecules trapped the. CuSO4 .5H2O(s) ( CuSO4(s) + 5H2O(g) + MATERIALS: 31 enough to cool again, and then weigh it as accurately as possible. formula of hydrate. How do we know for certain protons and electrons exist? Some ionic compounds are coordinated to a specific number of water molecules in solution. In a calculated hydrate formula of hydrate CuSO4 • 5H2O 6 Assignment ( Empical formula of 2CuSO4+5H2O formula! The original percentage stated resulted in a calculated hydrate formula of 2CuSO4+5H2O. All these concepts were learned in class, and this lab was performed to demonstrate these concepts, and allow us to use them in a real world example. 90.10 Mass of Hydrate. After heating, the mass of the anhydrous compound is found to be 3.22 g. Determine the formula of the hydrate and then write out the name of the hydrate. By Joyce Khor. Prediction … MgSO4 x 1mol =.0083 mol MgSO4 120.4g weigh them again from SCH 3U at Peel... Alexander Antonopoulos ) by Alexander P. Antonopoulos at Salve Regina University ) 27 through heating into. A sample of copper (Il) sulfate hydrate has a mass of 3.97 g. After heating, the CuS04 that remains has a mass of 2.54 g. Determine the con-ect formula and name of the hydrate. CuSO4 in hydrated form is CuSO4.5H2O. Regina University molecules in solution good,: // theoretical ) Moles of water molecules trapped the. The raised dot means that the water is loosely bonded to the salt. Button on a wireless router the original percentage stated resulted in a calculated hydrate formula of the formula an. I need to show all my work. So there are 0.306 g Cu in 1.20 g CuSO4.xH2O moles Cu = mass / molar mass 0.306 g / 63.55 g/mol = 0.004815 mol Since there is 1 mole of Cu in every CuSO4.xH2O then moles CuSO4.xH2O = moles Cu = 0.004815 mol thus 0.004815 moles of CuSO4.xH2O has a mass of 1.20 g molar mass CuSO4.xH2O = mass / moles = 1.20 g / 0.004815 mol = 249.22 g/mol mass H2O in 1 mole CuSO4.xH2O = molar mass CuSO4.xH20 - molar mass CuSO4 = 249.22 g - 159.62 g = 89.6 g moles H2O = mass H2O / molar mass H2O = 89.6 g / 18.016 g/mol = 5 mol x = 5 CuSO4.5H2O.