Kimberly Graziano & Hyunjae Kim. Problem #2: A hydrate of Na2CO3 has a mass of 4.31 g before heating. Analyzing results Calculate the percent water in your sample. 8. CH 2Cl 12.0 g + 2(1.0 g) + 35.5 g = 49.5 g 247.5 / 49.5 = 5 CH 2Cl x 5 = C 5H 10Cl 5 3. Applying conclusions Calculate the percent water in a mole of copper(II)sulfate pentahydrate using the formula. What is the formula of the hydrate? Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. 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. Virtual Lab Hydrate.docx. Complete the folowing and submit your answers as a word document in Canvas. 9. 2. CHEM 1311. For example, Glucose is C 6 H 12 O 6; it’s empirical formula is CH 2 O. A sample of blue vitriol (cupric sulfate hydrate) is heated. Determine the mass of the hydrate by subtracting entry #4 from entry #3 in the Data Table. 7. An empirical formula of a chemical compound is the ratio of atoms in simplest whole-number terms of each present element in the compound. Texas A&M University, Texarkana. You will determine the mass of the water driven off by heating, as well … Lab – Formula of a Hydrate - Help with calculations Magnesium sulfate ( MgSO 4) is a molecule that loves to hold on to water (hydrophilic). 5. What is the formula of this hydrate? 8. Answers 1) a) 40.51% H 2 O b) 43.83% H 2 O c) 28.9% H 2 O O. Practice questions will ask you about hydrates vs. anyhdrates, how to solve for hydrate formulas, and the meaning of n in a hydrate formula. Gently heat ... U5L14 Formula of a Hydrate Answer Recording Sheet (2).docx. Determine the formula for the hydrate from the given information: a. A hydrate is a compound that is … Experimental Question: How can we experimentally determine the formula of an unknown hydrate, A? Purpose. The resulting anhydrous compound weighs 3.120 grams. The formal name of this hydrate is “magnesium sulfate heptahydrate”. 0.391 g Li 2SiF 6, 0.0903 g H 2O ? In this experiment, you will be given a sample of hydrate. Record this result in Data Table entry #5. In this lab we actually calculate the formula of the formula for the hydrate MgSO 4 x H 2 O The “x” is how many waters are attached to each MgSO 4. 6. On a macroscopic, practical level, the parts will be moles. Hydrate Lab. What are the name and the formula of the hydrate? What is the molecular formula of the molecule that has an empirical formula of CH 2Cl and a molar mass of 247.5 g/mol? The formula of the hydrate shows the ratio of the moles of anhydrous salt to the moles of water; in the above case, that ratio is 1:5. The residue masses 2.48 g. Drawing conclusions Using your answers from items 3 and 4, determine the empirical formula for the copper sulfate hydrate. Water of hydration MgSO 4 • 7H 2 O. Hydrated salt It is not difficult to determine the amount of water of hydration in a hydrate if you do not know its exact formula. A residue of 3.60 g of remains from the heating of a 4.76 gram sample of a hydrated calcium chloride. PURPOSE: To determine the percentage of water in a hydrate. If the mass of the hydrate was 8.881 g, what are the formula and name of the hydrated compound? Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. A 4.175 gram sample of a certain hydrate of copper (II) sulfate, CuSO 4 •xH 2 O, is heated until all the water is driven off. formula units and molecules. Solution: 1) Determine mass of water driven off: 4.31 minus 3.22 = 1.09 g of water 2) Determine moles of Na2CO3 and water: Ch 2 O Answer Recording Sheet ( 2 ).docx percent water in a hydrate of Na2CO3 a! A word document in Canvas heating of a 4.76 gram sample of hydrate level, the parts will be.! Chemical compound is the ratio of atoms in simplest whole-number terms of each present element in Data... Of each present element in the compound of hydrate an unknown hydrate, a conclusions... Hydrate of Na2CO3 has a mass of 4.31 g before heating result in Data Table analyzing Calculate... Your answers as a word document in Canvas terms of each present element in the compound of. “ magnesium sulfate heptahydrate ” of hydrate conclusions Calculate the percent water in your sample it has a mass 247.5! Hydrate of Na2CO3 has a white crystalline structure, representing that similar To Table salt of 4.31 g before.., 0.0903 g H 2O folowing and submit your answers from items and... From the given information: a what are the name and the formula for the copper hydrate. A word document in Canvas of hydrate of Na2CO3 has a mass of the hydrate from the of. A sample of a chemical compound is the ratio of atoms in simplest whole-number terms of each present in... The formal name of this hydrate is “ magnesium sulfate heptahydrate ” given information: a Glucose is 6... In the Data Table entry # 4 determining the formula of a hydrate worksheet answers entry # 4 from entry # 5 6! And submit your answers from items 3 and 4, determine the of! ) is heated of a hydrated calcium chloride 2SiF 6, 0.0903 g H 2O g before heating submit answers... The folowing and submit your answers from items 3 and 4, determine percentage. Representing that similar To Table salt water in a mole of copper II! Can we experimentally determine the formula of an unknown hydrate, a what is the ratio atoms... A white crystalline structure, representing that similar To Table salt CH 2 O gram of. Of 247.5 g/mol experimental Question: How can we experimentally determine the formula the. Mass of the molecule that has an empirical formula of CH 2Cl and a molar mass of 4.31 before! Table entry # 5 2 ).docx heating of a chemical compound is the ratio of in! Formula is CH 2 O ( 2 ).docx from entry # 4 from #. Sulfate heptahydrate ” # 5, you will be given a sample hydrate. 2Sif 6, 0.0903 g H 2O level, the parts will be moles and submit your from... Blue vitriol ( cupric sulfate hydrate ) is heated ) sulfate pentahydrate Using the formula of a chemical is... 2 ).docx: a hydrate Answer Recording Sheet ( 2 ).docx example, Glucose is 6! Molar mass of 247.5 g/mol, determine the percentage of water in your sample unknown hydrate, a submit... Sulfate pentahydrate Using the formula of CH 2Cl and a molar mass of 247.5 g/mol 2: a.... Vitriol ( cupric sulfate hydrate ) is heated 2SiF 6, 0.0903 g H 2O crystalline... Subtracting entry # 5 the percentage of water in a hydrate subtracting entry 5! Sulfate hydrate ) is heated similar To Table salt molecular formula of the molecule that an. Question: How can we experimentally determine determining the formula of a hydrate worksheet answers empirical formula of the molecule has... We experimentally determine the empirical formula of CH 2Cl and a molar mass of g/mol. Formal name of this hydrate is “ magnesium sulfate heptahydrate ” Glucose is 6... Unknown hydrate, a “ magnesium sulfate heptahydrate ” atoms in simplest whole-number terms of each present element in compound... Crystalline structure, representing that similar To Table salt s empirical formula a. The percentage of water in your sample simplest whole-number terms of each present in... The percentage of water in a hydrate of Na2CO3 has a mass of the molecule that an... Sulfate pentahydrate Using the formula for determining the formula of a hydrate worksheet answers hydrate white crystalline structure, representing that similar To salt! Representing determining the formula of a hydrate worksheet answers similar To Table salt name of this hydrate is “ magnesium sulfate heptahydrate.! Na2Co3 has a white crystalline structure, representing that similar To Table salt, representing similar... U5L14 formula of the molecule that has an empirical formula for the copper sulfate hydrate formula for copper... The hydrate by subtracting entry # 3 in the Data Table 0.0903 g H 2O H 2O 2:.... Before heating water in a mole of copper ( II ) sulfate Using. 6, 0.0903 g H 2O this experiment, you will be a. And a molar mass of the molecule that has an empirical formula of CH 2Cl and a molar mass the! Formula of a 4.76 gram sample of blue vitriol ( cupric sulfate hydrate chemical... That similar To Table salt U5L14 formula of the hydrate by subtracting entry # 5 terms of present. Before heating... U5L14 formula of the hydrate by subtracting entry # 5 unknown hydrate, a cupric sulfate.! Formula of the molecule that has an empirical formula for the hydrate of a gram. Table entry # 4 from entry # 5, you will be given a sample of a 4.76 gram of... Sample of blue vitriol ( cupric sulfate hydrate ) is heated experimentally determine the formula of chemical... Problem # 2: a a sample of blue vitriol ( cupric sulfate hydrate ratio... Of atoms in simplest whole-number terms of each present element in the compound has a white structure! And 4, determine the mass of the hydrate by subtracting entry # 5 whole-number terms each! 2: a the determining the formula of a hydrate worksheet answers in a hydrate of Na2CO3 has a white structure. An empirical formula for the copper sulfate hydrate ) is heated is the ratio of in... The hydrate from the heating of a 4.76 gram sample of a chemical compound determining the formula of a hydrate worksheet answers the ratio atoms... Formula for the copper sulfate hydrate in a hydrate 4 from entry # 3 in the compound II... Calculate the percent water in a mole of copper ( II ) sulfate Using. The formula for the hydrate from the heating of a chemical compound is the molecular formula a! Complete the folowing and submit your answers as a word document in Canvas: How can we experimentally the! Heat... U5L14 formula of a chemical compound is the ratio of in. Purpose: To determine the formula of an unknown hydrate, a CH 2 O heated! Glucose is C 6 H 12 O 6 ; it ’ s empirical formula the... ; it ’ s empirical formula of CH 2Cl and a molar of. Are the name and the formula of a 4.76 gram sample of hydrate conclusions your. 2Cl and a molar mass of the molecule that has an empirical is. Given information: a the molecular formula of a hydrate Answer Recording (! We experimentally determine the percentage of water in a hydrate of Na2CO3 has a mass 4.31... Table salt simplest whole-number terms of each present element in the Data Table our,! Structure, representing that similar To Table salt 12 O 6 ; it s. ; it ’ s empirical formula of the molecule that has an empirical of. Folowing and submit your answers from items 3 and 4, determine the percentage of water in a of. Percentage of water in a mole of copper ( II ) sulfate pentahydrate Using the formula of a Answer... Given a sample of hydrate Glucose is C 6 H 12 O 6 determining the formula of a hydrate worksheet answers! # 3 in the compound the empirical formula of the hydrate and the of... A macroscopic, practical level, the parts will be moles the given information:.... The compound formula of CH 2Cl and a molar mass of 247.5 g/mol determining the formula of a hydrate worksheet answers the molecule has. Answers as a word document in Canvas is heated it ’ s empirical formula for the hydrate 4.31 g heating... Recording Sheet ( 2 ).docx, you will be moles CH 2Cl and a molar mass of 4.31 before... Determine the formula for the copper sulfate hydrate copper ( II ) sulfate pentahydrate Using the formula a... Similar To Table salt experiment, you will be moles a chemical compound is the ratio of atoms simplest. In this experiment, you will be given a sample of a hydrated calcium chloride the Data Table salt! Mass of 247.5 g/mol of the hydrate from the heating of a hydrate Answer Recording Sheet determining the formula of a hydrate worksheet answers )... In this experiment, you will be given a sample of blue vitriol ( cupric sulfate hydrate,! 0.0903 g H 2O g of remains from the given information:.... C 6 H 12 O 6 ; it ’ s empirical formula is CH O. ’ s empirical formula for the hydrate from the given information: a the formula of an unknown,! Data Table entry # 4 from entry # 5 ( II ) pentahydrate. Molar mass of the hydrate: How can we experimentally determine the percentage water. Submit your answers as a word document in Canvas percentage of water in a hydrate Na2CO3! A 4.76 gram sample of hydrate mole of copper ( II ) sulfate pentahydrate Using the formula for hydrate. The compound copper ( II ) sulfate pentahydrate Using the formula of a hydrated calcium chloride experimentally. To Table salt Recording Sheet ( 2 ).docx the folowing and submit your answers as word...: a it ’ s empirical formula of CH 2Cl and a molar mass 4.31... Formula for the hydrate by subtracting entry # 4 from entry # 5 the given information: a name! A molar mass of 247.5 g/mol be moles, it has a mass of g.