Pre-made digital activities. I could perhaps have not heated the hydrate enough, and not driven off all the water but then Id have less than 5, not more, waters per mol. But when copper sulfate is heated (as in a fire), these weak bonds are broken and the water evaporates. Tina Jones Heent Interview Completed Shadow Health 1, Test Bank Varcarolis Essentials of Psychiatric Mental Health Nursing 3e 2017, 1-2 Module One Activity Project topic exploration, (Ybaez, Alcy B.) Copper sulphate ; CuSO4.5H2O (NB The 5H2O is the water of hydration held in the crystal ; like you hold a tennis ball in your hand). What should I follow, if two altimeters show different altitudes? When dissolved in water, the anhydrous compound will have a color similar to that of the original hydrate even if it had changed color going from the hydrate to the anhydrous compound. What is "water of hydration" and how does it affect me (you)? At that time, the copper sulfate had turned a yellowish-white. We would call this copper sulfate pentahydrate. Determining the Empirical Formula of a Hydrate Lab (DOC) Chemistry Lab Report-Determining the Empirical Formula of a The equation for the decomposition of copper (II) sulfate is CuSO4 (aq) ==> SO2(g) + CuO(s). What year would you graduate high school if you were born on December 26,1990? cup' method. . In this section you will try to determine through the testing of a series of compounds, which ones are true hydrates. * Evaporating dish The water is present in a definite and consistent ratio. Do you have pictures of Gracie Thompson from the movie Gracie's choice. This means that the formula for hydrated copper sulfate is: The goal of this experiment is to determine the percentage of water (by mass) in a hydrate, and to calculate the ratio of salt to water in a hydrated salt. home experiment - Where's my experimental error coming from The difference between 5.00 and 5.16 is a weight error of about 200mg, and I was really careful, so this seems unlikely. Lab Report where $W_0$ is the start weight, $W_e$ the end weight and $M_i$ is the respective molecular mass. anyhydrous salt, which forms one half of the experiment, may not be The electronic scales (quite cheap) were an obvious first candidate for a source of error. Allow the crucible to cool down to room temperature (do not set the hot crucible on the bench top). Also, suggest some reasons why your number might be off from the true number. For sulphate salts, all are soluble except Lead Previous to an exposure to heat via the stove, it can be seen that the copper sulfate bear the natural form and colour of a bright blue crystal. The lab has an introduction to help students understand why they are doing the lab. DOC Copper Sulfate Lab - Montgomery Township School District * Cup This means part of the copper (II) sulfate would be turned into a gas, sulfur dioxide. Hydrated copper sulphate is blue in color while anhydrous copper sulphate is white in color.CuSO4 is white, the pentahydrate crystal (CuSO4.5H2O) and the aquous solution (Cu2+ (aq) ions) are. Students dehydrate copper (II) sulfate pentahydrate in a crucible or evaporation dish and use their data to determine the % composition and the number of water molecules per formula unit of copper (II) sulfate. How did it compare to the actual (it is given to you in step 3 of the calculations)? What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? Finding the formula of hydrated copper(II) sulfate | Experiment | RSC Education In this experiment students will measure the mass of hydrated copper(II) sulfate before and after heating and use mole calculations to find the formula. Measured mass of crucible again: 36.1571g, Measured mass of (hydrous) copper sulfate: 2.1614g, Measured mass of crucible with (hydrous) copper sulfate: 38.3189g, Heated crucible with hydrated copper sulfate for 3 minutes, before increasing heat, and heating it for 5 more minutes. Some hygroscopic substances, such as \(\ce{P2O5}\) and anhydrous \(\ce{CaCl2}\), are widely used to dry liquids and gases (see experiment on the Molecular Weight of \(\ce{CO2}\)); they are referred to as desiccants. Solids: Nickel (II) chloride, Cobalt (II) chloride, Sucrose, Calcium Carbonate, Barium chloride, Sodium tetraborate, Potassium chloride, Sodium sulfate hydrate, Iron (III) chloride, Potassium aluminum sulfate, Calcium chloride, Copper sulfate, Unknown. The mass of water evaporated is obtained by subtracting the mass of the anhydrous solid from the mass of the original hydrate (\ref{3}): \[m_{\ce{H2O}} = m_{\text{Hydrate}} - m_{\text{Anhydrous Solid}} \label{3}\]. Introduction - Hydrated Ionic Compounds, commonly called, "hydrates". Little or no prior knowledge of finding empirical formula necessary. The composition of the complex formed when hydrated copper (II) sulfate is reacted with oxine is Cu (C 9 H 6 ON) 2 with 351.85g/mole formula weight. This lab explored hydrates and the 4 objectives in a three procedure process through observation, experimentation, and mathematical methods to help prove whether dehydration of a hydrate is, Equipment and materials used in one or more procedure included: Hydrated copper sulfate, observation and experimentation. You might also like these related lessons! Copper Sulfate's Water of Hydration Lab Copper Sulfate's Water of Hydration Lab: Enrichment Activity Purpose - To observe the effect of removing the "water of hydration" from hydrated copper(II) sulfate. Heat the test tube and note any condensation that may appear at the mouth of the test tube as evidence of dehydration, note the color of the residue. Introduction: When this anhydrous compound is dissolved in water it will go back to the original red burgundy color. The copper sulfate is dissolved in 100ml of water that is distilled and contained in . The focus of this lesson is defining hydrates, the lab procedure of dehydrating a hydrate, doing percent of hydration and percent error calculations and naming hydrates. First, a pre-weighed sample of the unknown sulfate salt will be dissolved in water. When you get this mass remember it includes the mass of the crucible so you need to subtract the mass of the crucible from the total mass. What did your group get as the formula of the hydrate? Wt after: 8.22g How do you feel in the morning when you wake up? Remember the hydrate is in the crucible so you need to subtract the mass of the crucible to get the mass of just the hydrate. 2021-22, PDF Mark K Nclex Study Guide: Outline format for 2021 NCLEX exam. In this part, pea-, sized samples (1-3g) were place separately in test tubes and heated for approxim, Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Civilization and its Discontents (Sigmund Freud), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. (8 points) Hydrate: A compound that contains the water molecule. The lab requires bunsen burners, rings, ring stands, crucibles, crucible tongs, and balances. 4 fun activities! Lab Report 1 Why don't we use the 7805 for car phone chargers? First, it is so easy to set upnot much prep at all. Let's face it, percent composition and empirical formulas are not the most exciting concepts to teach in chemistry. ; (NH4)2S. Piece of paper, NaCl (sodium chloride), water, 6 M HCL (hydrochloric acid), 0.1 M AgNO3 (silver nitrate), Mg ribbon, 6 M HCL (hydrochloric acid), CuSO4 5 H2O, 0.50g iron fillings, 0.50g of powdered sulfur, magnet, copper sulfate solution, zinc metal PDF Experiment 1 Hydrates To participate in this lab it is, that there was no release of acidic vapors during the separating of the water and compound bonds. Or the hydrate, as supplied, could be a little wet. copper (II) sulfate hydrate. What is wrong with reporter Susan Raff's arm on WFSB news? Any anhydrous compound from a hydrate generally has the following properties: Most hydrates are stable at room temperature. Problem #2: A hydrate of Na2CO3 has a mass of 4.31 g before heating. 2. There is an example problem included. The mass was reduced to 7.58 g. What is the formula of the hydrate? Do Eric benet and Lisa bonet have a child together? Other hygroscopic substances, such as solid \(\ce{NaOH}\), absorb so much water from the atmosphere that they dissolve in this water, these substances are said to be deliquescent. Added deionized water to the anhydrous copper sulfate, at which point it became hydrated again, and returned to its original blue coloration. Compounds to be tested: \(\ce{Na2SO4*10H2O}\), \(\ce{FeCl3}\), \(\ce{KAl(SO4)2}\), \(\ce{CaCl2}\), \(\ce{CuSO4}\). Determining which hydrate of calcium chloride I have? A chemical reaction is when substances (reactants) change into other substances (products). Safety: Patel Where's my experimental error coming from? temperature change caused by the reaction is hard to measure. (3 points) The number you found for the water replaced the x in the formula CuSO, The actual (true) value is 5, so the formula would be CuSO. MathJax reference. ALL of the Chemistry Labs you need for a WHOLE year!! Hydrated copper sulfate (CuSO 4), hydrated ferrous sulfate, hydrated cobalt sulfate, sucrose, epson salt, 4 test tubes, . I weighed out some of the hydrate into another dry dish, flattened it out as much as possible within the confines of the dish to expose as much surface area as possible, and left it in the airing cupboard for 24h at 26 degrees Celsius. $X$ is the desired answer. I have a porcelain evaporating dish to contain the hydrate during heating, electronic scales that will weigh to 300g in increments of 10mg, and commercially bought copper sulphate that is allegedly 99.5% pure. Adding EV Charger (100A) in secondary panel (100A) fed off main (200A). They are very math intensive, and very conceptual in nature. This page titled 5: Properties of Hydrates (Experiment) is shared under a CC BY-NC license and was authored, remixed, and/or curated by Santa Monica College. What's even better is that you get credit from TpT every time you leave a constructive comment. For example, because for Trial 1 there was not exactly 2 mL of Copper Sulfate and 8 mL of distilled water, the concentration of the solution definitely could not be 0.080M. The purpose of this lab was to have real life experience with using observations to determine whether or not a chemical or physical change had occurred. Solved Post-Lab Questions 1. If the correct formula of - Chegg Do you perhaps have any information about the nature of the .6% impurities in the original sample? Note from Mr. Cook: Use the virtual lab and watch the video I put on the homepage! with an unknown hydrate to determine the mass percent of water lost and solve for the formula and name of the unknown 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. | | Water adheres to the dish when the dish is at room temperature. So assuming that 26 degrees is not warm enough to cause partial loss of water of crystallisation, that suggests that at best my hydrate is only 98.36% pure, not 99.5 as it says on the bottle (typo corrected above). Rinse the crucible and its cover with distilled water. It is generally possible to remove the water of hydration by heating the hydrate. The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. Add highlights, virtual manipulatives, and more. Purpose: To observe the difference between chemical and physical changes. Minutes in set-up time! There are some possible sources of experimental error for this lab Determining the Water Percentage Within Copper Sulfate - WritingBros Students chew bubble gum to remove sugar instead of removing water from a hydrate. so with this last source of error you edited in (the 0.02 g) my estimate of $\Delta W_e=0.1$g actually seems quite realistic. Find out the importance of drinking plenty of water and the adverse health effects of not getting enough water. The title says what you did. The weight after cooling of the evap dish is constant. Mathematics was used to explore wate, servation of mass and the reversibility properties in question. To find the expected error in the answer, $\Delta X$, assuming no error in the molecular masses, we calculate: T, Concepts:This worksheet teaches students how to determine the number of water molecules in a hydrate. Gently heat the hydrate by moving the burner back and forth around the dish. Label and place all samples at the same location in the room, well out of the way so they wont be spilled. Also, to see the color of each reaction determining the amount of energy released using our color scale. Determined mass of anhydrous salt by subtracting the mass of the crucible and lid, from the mass of the crucible, lid, and anhydrous salt: 1.1434g, Determined mass of the water lost by subtracting the mass of the anhydrous salt, from the hydrous salt: 1.018g. Is it safe to publish research papers in cooperation with Russian academics? sulphate, calcium sulphate and lead sulphate. * Cornstarch What will be the effect, on the mass of the residue, of overheating the hydrate so that the compound decomposes. Easel assessment included with this lesson plan.CDC HEALTH STANDARD SEVEN: Students will demonstrate the ability to practice health enhancing behaviors and to avoid or re, 9 worksheets to practice naming and writing formulas for ionic and covalent compounds, including acids and hydrates. Firstly to clarify a chemical change is defined as a change resulting. Because this kind of reaction is usually not spontaneous. Chemistry Experiment # _____ Percent of Water in Copper II Sulfate Pentahydrate Name_____ Section_____Date_____ Name(s) of Lab Partner(s) . Hydrate: A compound that contains the water molecule. Thanks for contributing an answer to Chemistry Stack Exchange! when does coordination become the distinctive task of management why? xH2O(s)) Before heating Run 1 Run 2 Mass of crucible 27.29 g 27.51 g Mass of crucible + hydrate 28.56 g 30.00 g Mass of hydratea 1.27 What does that x value tell you? Lab Question: How can lichen indicate the quality of its environment? You'll be surprised at how much older kids like to color!This Science color-by-numbers activity includes 18 questions covering writing a formula from the name of an acid, hydroxide or hydrate or naming the compound from a chemical formula. The reaction of Copper (II) Sulfate, CuSO4, mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Wt before: 13.030.9836 = 12.82g hydrate Paragraph #1: Purpose and a brief description of what you did. In this section we will determine the number of moles of water present per mole of anhydrous solid in a given hydrate. Given the data presented above, findings showed the experimental percentage of water within the hydrated salt to be: 47.10%, The accepted percentage of water within hydrated copper sulfate is:36.07%, As such, the percent error within this measurement is30.57%, The experimental stoichiometric ratio between copper sulfate and water was found to be: 1:5.314, The accepted stoichiometric ratio between copper sulfate and water is: 1:5, The percent error within this measurement is 5.909%. Water lost: 4.60g. I would go with a full fledged error propagation analysis on this one, because without systematic approach you might be guessing forever. Embedded hyperlinks in a thesis or research paper. 6. When you would go to mass the anhydrous salt, some of the mass would be missing as it would be in the air. . Another possibility would be to get more accurate equipment, to replicate the experiment within a dehumidified environment, and/or perform the experiment using a larger crucible (to reduce the possibility that spatter from the hydrated salt could leave the crucible). Copper Sulfate Pentahydrate Lab Report | ipl.org Sulphate, Calcium Sulphate, Barium Sulphate and also Silver Test tubes Using crucible tongs, clean a porcelain crucible and its cover using concentrated nitric acid (6 M). Which is very close to the actual error you find. the main. Explain what may have happened. Through this the appropriate reaction had to be determined out of the two possibilities. $0.08$ g. Now plugging in the numbers in Eq.$(3)$ I find $\Delta X=0.14$ mol water per mol copper sulphate. * Copper II sulfate I havent investigated that yet, but I plan to weigh a sample before and after leaving in a warm airing cupboard overnight. Use crucible tongs when cleaning the crucible with concentrated nitric acid. Updated sections include a new hydrate toolbox, updated correlations and computer methods. The actual percent is ____. AB1 Paragraph #2: What did you learn? Answer the questions below. The second procedure called for us to heat a number of other hydrates and test their vapors for any evidence of acid just as we had done in the previous experimental procedure.