# determining the chemical formula of a hydrate lab

An empirical formula of a chemical compound is the ratio of atoms in simplest whole-number terms of each present element in the compound. Angel Deeley Determining the Chemical Formula of a Hydrate Pre Lab Coversheet Introduction-A hydrate is a compound that is a salt with a H 2 O molecule bonded to it. We will do, this by determining the mass of Water driven out of the compound when it is heated. An empirical formula of a chemical compound is the ratio of atoms in simplest whole-number terms of each present element in the compound. Find the chemical formula and the name of the hydrate. Course. However, not all compounds form in a 1:1 ratio of their constituent elements. Lab: Formula of a Hydrate. water that are loosely bonded to one unit of the salt. Solution #1: 1) Let us assume one mole of the hydrated Na 2 CO 3 is present. The chemical formula for calcium chloride dihydrate is CaCl2•2H2O. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Ca: 1 x 40.1 = 40.1 S: 1 x 32.1 = 32.1 O: 3 x 16.0 = 48.0 120.2. The molar mass of anhydrous Na 2 CO 3 is 105.988 g/mol. 1 0 obj LaGuardia Community College. My chemistry class had a lab where he gave us all different amounts of unknown substances that were hydrates. Determining the chemical Formula of a Hydrate Lab Partners:Darren Lee,James le,Brandon Nguyen Teacher: Mr.Cox Date: March 30th 2019 Course Code:SCH-3U0-C Materials: of the substance was 4.24 g and after we heated it a few times the ending mass was 3.62 g. Now I have to figure out what I have. Pre-Lab Questions: 1. The water is chemically combined with the salt in a definite ratio. My lab partner and I measured and did all that good stuff. Match. Share. Spell. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. We did a lab at our school recently but some of the questions regarding the lab confused me. did a lab at our school recently but some of the questions regarding the lab confused me. 2017/2018. PLAY. Learn. However, this is rare. For example, Glucose is C 6 H 12 O 6; it’s empirical formula is CH 2 O. Remove the filter paper with the copper from the funnel and leave it to dry. Find the formula and name of the hydrate. The percent error for the mass of water lost in the hydrated compound was calculated to be 38.8%. Lab Determining the Chemical Formula of a Hydrate - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. A hydrate is an ionic compound that contains water molecules in its crystal structure. My lab partner and I measured and did all that good stuff. 53860 Sigma-Aldrich. did a lab at our school recently but some of the questions regarding the lab confused me. When it has dried Find the formula and name of the hydrate. Hint: Re-read the background information! A hydrate is an ionic compound that has a definite amount of water molecules attached to its crystalline structure. Wella Professionals. stream xH2O. We can then use this. 14. Virtual Lab: Formula of a Hydrate Background: Hydrates are ionic compounds (salts) that have a definite amount of water (water of hydration) as part of their structure. Purpose: The purpose of this lab is to ensure that the student understands the procedure of heating to constant mass and to determine from experimental data the number of moles of water released by a hydrate and infer the chemical formula of the hydrate. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. Digication ePortfolio :: General Chemistry (Alexander Antonopoulos) by Alexander P. Antonopoulos at Salve Regina University. When finding the molar mass of this chemical, you find the mass of the calcium sulfate and then add the mass of the water molecules to it. 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. The chemical formula of a hydrate specifies the relative number of each kind of atom in a formula unit of the compound, as well as the number of water molecules bound to each formula unit. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. If the formula of the anhydrous compound is known, you can determine the formula of the hydrate. Lab 2: Determine the Percentage of Water in a Hydrate: The goal of this experiment is to learn how to properly calculate the ratio of salt to water, in a hydrated salt, and to calculate the percentage of water (by mass) within a hydrated salt. What two things make up hydrates? When it has dried 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. Ionic Hydrates Ionic compounds (salts) in which one or more water molecules are bound in the crystalline structure of the salt: In this laboratory experiment, students will determine the percent water in an unknown hydrate and use that information to determine the formula of a hydrate. Hydrates generally contain water in stoichiometric amounts; hydrates’ formulae are represented using the formula of the anhydrous (non-water) component of the complex followed by a dot then the water (\(\ce{H2O}\)) preceded by a number corresponding to the ratio of \(\ce{H2O}\) moles per mole of the anhydrous component present. Background. For example, Glucose is C 6 H 12 O 6; it’s empirical formula is CH 2 O. The number of moles of water. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. <>>> endobj Prelab video to help Academic Chemistry students at Wyomissing Area Jr./Sr. Many compounds exist as hydrates. The formula of a hydrate can be determined by dehydrating a known mass of the hydrate, then comparing the masses of the original hydrate and the resulting anhydrous solid. When 5.00 g of FeC13 xH20 are heated, 2.00 g of H20 are driven off. I really just need somebody to check this over for me. Hydrate Lab By Maya Parks Partners: none 2/20/15 Abstract: This experiment was performed to determine the chemical formula of the hydrate copper (II) sulfate We even found the percentage of water in the compound. In addition, the mass percent of water lost by the hydrate can be calculated. - perhaps you didn't heat it long enough, or hot enough to cause all the water to be eliminated (this will lead to a too low result - not enough H2O). means that the water is loosely bonded to the salt. A hydrate is a compound that is chemically combined with water molecules. General Chemistry I (SCC 201) Academic year. The purpose of this experiment is to determine the empirical formula of a hydrate. The original percentage stated resulted in a calculated hydrate formula of 2CuSO4+5H2O. Na 2 SO 4 (ionic compound; Na 2 SO 4 is the formula unit) H 2 O (covalent; exists as separate H 2 O molecules) Molecules: Matter composed of more than one atom; the atoms are joined by covalent bonds (e.g., O 2, P 4, C 6 H 12 O 6, TiCl 4). did a lab at our school recently but some of the questions regarding the lab confused me. So I did a lab determining the chemical formula of a hydrate. In the formula MgSO4 nH2O, what does the n before the H2O stand for? Comments . Prediction When the solution is heated the hydrate will convert to an anhydrous ionic compound. LaGuardia Community College. Dickens and Quinby-Hunt 1994). 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. Determining the Chemical Formula of a Hydrate Group Members: Akshay , Jason, and Doris Teacher: Ms.Misiri By : Ravinna Raveenthiran Course Code: SCH3U Due Date: May 2 2016 Chemistry Lab Purpose: The purpose of this experiment is to determine the chemical formula for the hydrate of copper (II) sulfate. A hydrate is an ionic compound that contains water molecules in its crystal structure. Determining the Chemical Formula of a hydrate, please help!? A hydrate of zinc nitrate has the formula Zn(NO3)2 . Transfer the pond to the moles. Start studying Lab #5: Determining the Chemical Formula of a Hydrate. Students also viewed. What two things make up hydrates? The ratio of water mol ecules to the anhydrous salt is constant. High School, Wyomissing, PA. So I did a lab determining the chemical formula of a hydrate. Flashcards. of the substance was 4.24 g and after we heated it a few times the ending mass was 3.62 g. Now I have to figure out what I have. 1 0. Labreport#4 - Determining the Empirical Formula of a Hydrate C Determining the Empirical Formula of a Hydrate C. University. Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. So I did a lab determining the chemical formula of a hydrate. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Hydrate Lab. 4 0 obj 2. The formula of a hydrate is represented in a specific way. Course. Determining the Percent Composition and Formula of a Copper Chloride Hydrate Overview: The mass percents of Cu, Cl and H 2O in a compound are determined by separating and massing the three components. Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. copper sulfate in this experiment is listed below: In the formula of a hydrate, the formula for the salt appears first, and the water formula is last. An example would be CaSO4 ∙3H2O, which would be called calcium sulfate trihydrate. Background: Hydrates are ionic compounds (salts) that have a definite amount of water (water of hydration) as part of their structure. 16 3. Start studying Lab #5: Determining the Chemical Formula of a Hydrate. Determine the formula of the hydrate. Shows how to determine the number of moles of water in a hydrates compound. Gravity. Determining the Chemical Formula of a Hydrate. Description of Action. Ratios vary in different hydrates but are specific for any given hydrate. Copper (II) Sulfate (CuSO4) Data Collection Table Data Analysis Table Empirical Formula of the Hydrate Copper (II) Sulfate: Anhydrous Salt: 7.2g(1.00 mole /159.607g) = 0.045 mo… They are known as “hydrated salts”, or simply, hydrates. The water is chemically combined with the salt in a definite ratio. 16 3. A hydrate is a compound that is chemically combined with water molecules. Hydrates are ionic compounds (salts) that have a definite amount of water as part of their structure. Students also viewed. Chemistry I—Lab: Determining the Chemical Formula of a Hydrate. Prediction When the solution is heated the hydrate will convert to an anhydrous ionic compound. Labreport#4 - Determining the Empirical Formula of a Hydrate C Determining the Empirical Formula of a Hydrate C. University. 2 0 obj Remove the filter paper with the copper from the funnel and leave it to dry. The ratio of water molecules to the anhydrous salt is constant. <> Transfer the mass of the remaining anhydrate to the moles. Equipment/Materials: Crucible (without lid), clay triangle or wire triangle, iron ring, ring stand, lab burner (Bunsen or Fisher), crucible tongs, electronic balance, heat pad, approx. For example, sodium and chlorine combine to form sodium chloride, NaCl. Course Hero is not sponsored or endorsed by any college or university. 3 0 obj By measuring the compound before heating and after, the amount of water in the original hydrate can be determined and the formula discovered. Lab 2: Determine the Percentage of Water in a Hydrate: The goal of this experiment is to learn how to properly calculate the ratio of salt to water, in a hydrated salt, and to calculate the percentage of water (by mass) within a hydrated salt. Helpful? 2. Write. Hint: Re-read the background information! Hydrate Lab By Maya Parks Partners: none 2/20/15 Abstract: This experiment was performed to determine the chemical formula of the hydrate copper (II) sulfate We even found the percentage of water in the compound. There are many tools (such as, chromatographic separation and spectroscopy) available … Learn vocabulary, terms, and more with flashcards, games, and other study tools. Wella Professionals. Title: Virtual Lab: Determining the Formula of a Hydrate Purpose: In this lab you will determine the formula of the hydrate of copper II sulfate, virtually. However, this is rare. Determining the Chemical Formula of a Hydrate Lab PURPOSE: In this laboratory exercise we will determine the relative amount of water in a hydrated compound. How can you determine this? The beginning weight (uh mass?) did a lab at our school recently but some of the questions regarding the lab confused me. An anhydrate is the result of all of the water molecules detaching from the salt by dehydration. Procedure: Access the virtual lab by clicking on the following link: Chemistry Dept IA State - Formula of a Hydrate 1. %���� Find the chemical formula and the name of the hydrate. They are known as “hydrated salts”, or simply, hydrates. Test. Share. From the data collected the number of molecules of hydrated water will be determined per molecule of anhydrous salt. Here are the steps to finding the formula of a hydrate: Determine the mass of the water that has left the compound. Unknown solid copper chloride hydrate Aluminum wire, 20 gauge 6 M hydrochloric acid, HCL, solution 95% ethanol solution Distilled water Wash bottle Balance Glass stirring rod 13. Many compounds exist as hydrates. HydrateLab.docx - Determining the Chemical Formula of a Hydrate Lab PURPOSE In this laboratory exercise we will determine the relative amount of water, Determining the Chemical Formula of a Hydrate Lab, In this laboratory exercise we will determine the relative amount of water in a hydrated compound. Terms in this set (5) If there are three moles of H2O for every one mole of LiClO4, then what is the hydrate formula? I really just need somebody to check this over for me. Determining the Chemical Formula of a hydrate, please help!? Action. When finding the molar mass of this chemical, you find the mass of the calcium sulfate and then add the mass of the water molecules to it. Please sign in or register to post comments. For example, sodium and chlorine combine to form sodium chloride, NaCl. This “water of hydration” is released as water vapor when the hydrate is heated. In addition, the mass percent of water lost by the hydrate can be calculated. Comments . Determining the empirical formula of a hydrate Background Different elements can form chemical bonds to create compounds. 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. A hydrate is an ionic compound that has a definite amount of water molecules attached to its crystalline structure. Kimberly Graziano & Hyunjae Kim. Helpful? My chemistry class had a lab where he gave us all different amounts of unknown substances that were hydrates. Created by. endobj Their formulas are written in two parts – the anhydrous salt, followed by some number of water molecules called the water of hydration. Prediction When the solution is heated the hydrate will convert to an anhydrous ionic compound. Because the law of definite composition applies, the number of moles of water driven off per mole of anhydrous compound is a simple whole number. Please sign in or register to post comments. An example would be CaSO4 ∙3H2O, which would be called calcium sulfate trihydrate. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. STUDY. Hydrates are ionic compounds (also called salts) that have a definite amount of water as a part of their, structure. The exercises below will provide additional practice in determining the chemical formula of a hydrate based on experimental data. Hydrates do not … 2017/2018. Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. Prediction When the solution is heated the hydrate will convert to an anhydrous ionic compound. 1. 53860 Sigma-Aldrich. Purpose. Unknown solid copper chloride hydrate Aluminum wire, 20 gauge 6 M hydrochloric acid, HCL, solution 95% ethanol solution Distilled water Wash bottle Balance Glass stirring rod 13. 14. Ratios vary in different hydrates but are specific for any given hydrate. HealthandLifeInsurance_PredictingOutcomesAssignment.docx, Brunswick High School, Brunswick • BIO 1101, Lab report Hydrate Lab - Denisa Wood.docx, Lab 6 Assignment ( Empircal formula of Hydrates).docx. Kimberly Graziano & Hyunjae Kim. Chem 11. Determining the Formula of a Hydrate. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. 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By some number of moles of water lost by the hydrate will convert an!: How can we experimentally determine the mass of the anhydrous salt is constant with the copper from the and! = 32.1 O: 3 x 16.0 = 48.0 120.2 201 ) Academic year sulphate CuSO4... Get the hydrate CO 3 is present and leave it to dry remove the filter paper with copper... Academic year molecules in its crystal structure the result of all of the hydrate NO3 ) 2 other tools... Contains water molecules attached to an ionic compound salts, incorporate water into their crystalline.... Of each present element in the compound when it is heated 201 ) Academic year filter paper the...