45 8. 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 … Example: CuSO4 x 5H2O has 5 water … Drawing conclusions Using your answers from items 3 and 4, determine the empirical formula for the copper sulfate hydrate. >> /BitsPerComponent 8 Some of the worksheets for this concept are Work 7 nomenclature of hydrated ionic compounds, Hydrates work, 7 29 molecular formulas and hydrates wkst, Hydrate practice problems, Key, Nomenclature work molecular compounds binary, , Empirical and molecular formula work. It has water molecules loosely attached to it. Favorite Answer Assuming only and all water was lost -- that water was 0.7 g. The original salt weighed 5 g, so percentage water in hydrate was 100*(0.7/5) = 14% determining the formula of a hydrate chem worksheet 11 6 answer key, 2 PLAN Determine the information necessary to answer the questions. >> Show all work! the hydrate by using the molar mass determined from the periodic table. KEY 1. Name _____ Prelab for hydrate lab Fill in the blanks in the chart below and answer the three questions. If 0.235 g of CuC12 x H20 gives 0.185 g of CuC12 on heating, what is the value of x? Determine the percent Oxygen in Potassium Perchlorate. This video covers how to calculate the percentage composition of a hydrate Find the difference between the electronegativities. 3 COMPUTE Determine the types of bonds from the given … /Height 2864 >> What percentage of water was in the hydrate? Copper (I) Bromide tetrahydrate. 1. 1. Nickel (II) sulfate hexahydrate. A 5.0 gram sample of a hydrate of barium chlonde was heated, and only 4.3 g of the anhydrous salt remained. 6 0 obj Look up the electronegativity values for each element. The resulting anhydrous compound weighs 3.120 grams. ���� JFIF H H �� LExif MM * �i &. When the water is driven off, the resulting product is the anhydrous salt which is called an anhydride. What percentage of water was in the hydrate? P 2O 5 2(31.0 g) + 5(16.0 g) = 142.0 g 283.9 / 142.0 = 2 P 2O 5 x 2 = P 4O 10 2. Showing top 8 worksheets in the category - H2o. Naming Ionic Compounds and Hydrates Answer Key Write the name for each of the ANSWER KEY_Worksheet - Naming Ionic Compounds and Page 7/22 HW – Hydrates, Percent Composition, EF/MF Date _____ Complete these problems on a separate sheet of paper. This Hydrates Worksheet Worksheet is suitable for 9th - 12th Grade. What is the formula of this hydrate? /XObject << Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. Answer the questions below. endobj 7. endstream 6. Some of the worksheets displayed are Water wise work, Stoichiometry 1 work and key, 4 h national youth science day youth work, Chapter 20 work redox, Determining the formula of a hydrate name chem work 11 6, Balancing chemical equations work 1, Balancing equations work and key 7 23 09, Mole calculation work. Copper(II)sulfate pentahydrate. Composition of Hydrates Worksheet (DOCX 15 KB) Determining Empirical Formulas Worksheet (DOCX 14 KB) Determining Molecular Formulas (True Formulas) ... Stoichiometry - Volume-Volume Problems Worksheet - Answer Key (DOCX 18 KB) NEED HELP DOWNLOADING: doc file: You need the Microsoft Word program, a free Microsoft Word … What percentage of water is found in CuSO 4 * 5H 2 O? Why do hydrates form? COMPOSITION OF HYDRATES Name A hydrate is an ionic compound with water molecules loosely bonded to Its crystal structure. Percent Composition of Hydrates 6. To determine the formula of a hydrate experimentally, we must calculate the mole: mole ratio of the water portion compared to the anhydrate portion. /Title (AP\040ws\040Hydrates\040key) Naming Ionic Compounds and Hydrates Answer Key Write the name for each of the Kimberly Graziano & Hyunjae Kim. Number Prefix What percentage of water is found is Na 2 S * 9H 2 O? The water is in a specific ratio to each formula unit of the salt. HYDRATES & COMPOSITION PROBLEMS Cupric chloride, CuC12, when heated to 1000C is dehydrated. Purpose. /Filter [ /DCTDecode ] Title: Microsoft Word - 7-29a Molecular Formulas and Hydrates Wkst-Key.doc Author: Brent White Created Date: 6/30/2005 10:49:43 PM endobj /Contents 5 0 R /Width 2150 naming hydrates worksheet answers, net ionic equations pogil answer key in pdf format. Conclusions 5. /Type /Page Hydrates can normally be decomposed into the anhydrous (without water) salt and free water by gentle heating. KClO4 Molar Mass is 138.547 ... HW - Hydrates, Percent Composition, EF, MF Answers Author: Katharine Macdonald Determining the Formula of a Hydrate Chem Worksheet 1 1-6 Name A hydrate is an ionic compound that contains water molecules in its structure. 3. Net Ionic Equation Worksheet Answer Key - Thekidsworksheet Solubility Of Ionic Compounds With Answers Worksheets - there are 8 printable worksheets … 4 0 obj A 5.0 g sample of a hydrate of BaCl 2 was heated, and only 4.3 g of the anhydrous salt remained. For example, the formula CuS0405H20 indicates that there are five water molecules for every one formula unit of CuSOa. Naming Hydrates AnswersView Homework Help - ANSWER KEY_Worksheet - Naming Ionic Compounds and Hydrates.pdf from CH 204 at University of Texas. Use the information to answer the questions. Ÿ¾ûò‹%'fŠì9ßG 31PÚ퇴{_•& uºê}満yY€Ak%Š -6b Î“N± Pqxº¬2 ¥S9è2£×a}z`-†jeµ—‹ D¤û,R±¤@š ¢ aY´´– Q€ÁÀrjºúǀRpkõ“¦sT:v L/u:Ih´8€%,€[s ˆÉÍ[ɍ2 V¼/_¨ù /ColorSpace /DeviceGray << 3 0 obj Use the diagram on page 166 to determine the type of bond. 7. We were trying to determine the mass of the hydrate, anhydrous salt, and water, as well as the empirical formulas for Copper (II) Sulfate (CuSO4). Write the correct numerical prefix for each of the numbers in the table. These water molecules can typically be removed through heating (a process called “dehydration”. << Displaying top 8 worksheets found for - Hydrates. /Pages 2 0 R 7. << /Creator (Genius\040Scan) the hydrate by using the molar mass determined from the periodic table. müÀz2` ˁ-`­E5‡ÐRj½î²$U]@ž@e€„SŽ°ìAPéµb¸l Օ ¡ëZP†¼z /çÖ¨ £–IZ­À3Š–!3’Ð•Ì 1ƒ4j͜©Pq¶œDjg:iÝN¾Q`оUº0’õ. Conclusions 5. A 2.5 gram sample of a hydrate of was heated and only 1. anhydrous salt remained. endobj 7 0 obj << A certain hydrate is found to have the following percent composition by mass: 20.3% Cu, 8.95% Si, 36.3% F and 34.5% H 2 O. 6. COMPOSITION OF HYDRATES - KEY 1. 5 0 obj /Subtype /Image In this chemistry worksheet, students look for the concepts connected to hydrates and answer the variety of questions given for the assessment. Home; Who We Are; What We Do; How We Do It; Contact; Client Portal; experiment 18: formula of a hydrate answer key. 1. For example: CuSO 4 5H 2 O(s) CuSO 4 (s) + 5H 2 O(g) hydrate anhydride /X1 7 0 R February 2, 2021 x�+�2�4�31100S0 BsKc=CCS#0/9�K?�P�%�+� ��g /Parent 2 0 R A hydrate is a compound that has a specific number of water molecules bound to its atoms. 2. The empirical formula of a compound is found to be P 2O 5. Percentage Composition Worksheet – Answer Key Give the % composition of all elements in these compounds. 1 0 obj Ð"rÄ&¦Ögq¥.`„îUDŽb‡š. >> Water is a very polar molecule which tends to be attracted to the ions found in may ionic compounds. Show work, include units, and put your answers in the blanks. William weighs an empty beaker and finds it to have a mass of 95.83 g. After putting a spoonful of an unknown hydrate into the beaker, he finds that … Cobalt chloride hexahydrate. Title: Microsoft Word - 7-21a % Composition and Empirical Formulas wkst-Key .doc Author: Brent White Created Date: 6/28/2005 11:31:03 PM @»tMÝL˜Éñ\oêè =—™ÔŽ± , Cu cc 2 CuCC2 'x Cuc C 9 mol 2 C C 2 ' 2 HIC) The "alum" used in cooking is potassium aluminum sulfate hydrate, x 1-120 . >> %PDF-1.3 What percentage of water was in the hydrate? 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. What percentage of water found in Na 2S•9H 2O? /Type /XObject /Producer (Haru\040Free\040PDF\040Library\0402.1.0) Composition of Hydrates Worksheet (Red Book) 1. In order to determine this, we weighed the mass of Copper (II) Sulfate, boiled it for about 10 minutes until it became an anhydrous salt, … What is the molecular formula of the compound? /Filter [ /FlateDecode ] What percentage of water is found in Na£ 9 H20? Interpreting information Explain why the mass of the sample decreased after it was heated, despite the law of conservation of mass. Interpreting information Explain why the mass of the sample decreased after it was heated, despite the law of conservation of mass. Drawing conclusions Using your answers from items 3 and 4, determine the empirical formula for the copper sulfate hydrate. Performance Wealth. << << Experimental Question: How can we experimentally determine the formula of an unknown hydrate, A? Observing our nitrate, it has a white crystalline structure, representing that … /Type /Catalog Experiments show that the molar mass of the compound is 283.9 g/mol. To find the endobj endobj /Count 2 Percent Composition of Hydrates and Answer Key Assigned as HW on 2/27/18 Percent Composition Review Book HW Answers AND Mole Conversions Packet and Answer Key Assigned as HW on 2/28/18 Stoichiometry WS 1 and 2 Answer Key… f the 8. >> endobj When heated above 100oC, hydrates lose their water molecules fairly easily since the hydrate bonds are much weaker than the ionic bonds between the salt ions. Hydrates Worksheet Solutions 1) How is a hydrate different from other chemical compounds? /Length 6 0 R Na 2S: 2(23.0) + 32.1 = 78.1 g/mol 9H 2O: 9(18.0) = 162.0 g/mol Na 2S•9H 2O (total): 240.1 g/mol %H 2O = 162.0/240.1*100 = 67.5% 2. Hydrate Lab. %���� for the following hydrates: Barium Phosphate dihydrate. Naming Hydrates. /Resources << /MediaBox [ 0 0 595.44006 793.18152 ] stream Net ionic equation worksheet answers write balanced molecular ionic and net ionic equations nie for each of the following reactions. Magnesium sulfate heptahydrate. /Kids [ 4 0 R 9 0 R ] /Type /Pages A 5.0 g sample of a hydrate of BaCl 2 was heated, and only 4.3 g of the anhydrous salt remained. stream /Length 8 0 R 2 0 obj View Homework Help - Worksheet - Naming Ionic Compounds and Hydrates - Answer Key from CH 204 at University of Texas. /ProcSet [ /PDF /Text /ImageB /ImageC /ImageI ] Many compounds form from a water (aqueous) solution. >> A hydrate is a chemical compound, generally ionic, that has weakly bonded to it a specific number of water molecules per formula unit. 7. >> Kimberly Graziano & Hyunjae Kim. A compound has the following % composition—76.54 % C, 12.13 % H, and 11.33 % O. Answers from items 3 and 4, determine the empirical formula for assessment! 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