Lab Report What did you learn? A reversible reaction of hydrated copper(II) sulfate The weight after cooling of the evap dish is constant. 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. The copper sulfate is dissolved in 100ml of water that is distilled and contained in . 6. Use this tool to record your data and then watch all the necessary calculations and analysis completed in seconds!This resource accompanies the lab handout/procedure here. Use this picture to get the mass of the anhydrate (white powder). In this section we will demonstrate the dehydration and re-hydration of cobalt (II) chloride hexahydrate. Is it safe to publish research papers in cooperation with Russian academics? Also, suggest some reasons why your number might be off from the true number. +1. What does that x value tell you? Copper sulfate and potassium iodide precipitate, EXAMPLE HYDRATECUPRIC SULFATE PENTAHYDRATE The coefficient of 5, Copper SourcesUses n Copper cookware n Copper pipes, Characterization of the Heparan Sulfate and Chondroitin Sulfate, Percent of Change Percent of Increase Percent of, Percent Composition What is Percent Composition The percent, Percent Proportion Equation Percent of Change Percent of, Empirical molecular percent composition Percent Composition Percent by, Percent Vpoet potu percent Vypotaj spamti koko percent. 8.22/(63.5+32+64) = 0.0515mol anhydrous copper sulphate. Ms. Macielag's Thursday Lab Class (Honors), Building and Identifying All Organic Compounds, Lab Book: Setting Up Graphing Reference Sections, Naming and Writing Formulas (without Formula Mass). Download Free PDF View PDF Excellent layout. Place the crucible on the triangle and ring stand over the bunsen burner and heat until it turns white. which works out to: This lesson presumes a basic understanding of how to name and write the formulas for binary ionic compounds. After one hour, note any change in the physical appearance of each sample. Be sure to subtract out the crucible before putting it into the proper space above. I love this lab for several reasons. Sulphate. If the results of your calculations suggest that you have some water left in the residue, reheat your sample for an additional 5 minutes, allow it to cool down and weigh it again. For $\Delta W_0$ I think it is safe to say that this is only the inaccuracy of the scale, so perhaps $0.01$ g. For $\Delta W_e$ I would go for the worst case scenario: that all of the 0.6% impurity in the original copper sulfate has evaporated, meaning that the weight will be off by 0.6% times $W_0$ i.e. MIP Model with relaxed integer constraints takes longer to solve than normal model, why? Copper Sulfate Pentahydrate Lab Report | ipl.org 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. A. Why purchase my version of this lab? If a chemical reaction occurred, write a balanced equation for it. The purpose of the flame test lab was to further study the process of electron excitation. Why did DOS-based Windows require HIMEM.SYS to boot? Question: Name Formula of Hydrates Lab Report Data and Calculations: Copper (II) sulfate hydrate Trial 1 Trial 2 19.244 20.546 24.504 27.689 Mass of crucible and cover (6) Mass of crucible, cover, sample before heating is) Mass crucible, cover, sample after heating (8) Mass of hydrate() 22.606 25.111 Mass of anhydrous solide Mass of water driven off (e) Moles of water In an evaporating dish, gently heat a small amount (0.3 0.5 g) of \(\ce{CoCl2*6H2O}\) crystals until its color changes to violet then to blue. The iron oxidation state was, Copper-Iron Stoichiometry What does that x value tell you? Lab Report clip art, assessment, writing prompt, art activity, answer key, printables, no prep needed. Even though it was close, the molarities of the five solutions were not exactly the ones that should have been used to carry out the lab. It only takes a minute to sign up. Chemical Changes VS Physical Changes Conclusion The mass percent of water in copper sulfate pentahydrate is _______. Great for Teachers:See if student data is on the right track with a few clicks or copy & paste.Check if calculations and conclusions made by students are right without needing manually doing the calculations.Provide s, This unit covers:1) Percentage Composition by Mass2) Finding Empirical Mass and Formulas3) Finding Molecular Mass and Formulas of Compounds4) Student Presentations Project, with rubric5) Finding Molecular Mass and Formulas of Hydrates6) Lab Activity: Determination of a Formula of a Hydrate7) Assessments and Check for Understandings8) Re-Teach PowerPoints, Over 15 practice problems on hydrate nomenclature, naming, and formula writing, complete with a full answer key.Goes Well With My Other Nomenclature Worksheets. 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. Weigh the crucible with its cover to the nearest 0.001 g. Making sure to handle the crucible and its cover with clean tongs, add about 1 g (weighed to the nearest 0.001 g) of the unknown hydrate. A minor scale definition: am I missing something? has a mass of 4.31 g before heating. Copper Sulfate absorbs water easily, forming a weak bond between the copper sulfate and five water molecules. The goal of this experiment was to determine the product of copper (II) sulfate with iron. Ignited Bunsen Burner, and heated crucible for 12 minutes. Happy teaching and have an, Students find the Empirical Formula of Epsom Salt. Hypothesis: If dyed lichen is exposed to certain chemicals, than color will color the solution. A substance is classified as efflorescent if its mass decreases by 0.005 g or more; and it is classified as hygroscopic if its mass increases by 0.005 g or more. This is appropriate for all levels of chemistry. * Vinegar Copper sulfate water of hydration lab and answer sheet and question Iron (III) chloride. Solved Post-Lab Questions 1. If the correct formula of - Chegg This will result in the precipitation of . Will this likely lead to a higher or lower value of \(x\) than the actual value. Record the mass of the crucible, cover and sample. 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. Add highlights, virtual manipulatives, and more. Assumed water content: 42.6841.98 = 0.7g (!!!). * Alka-Seltzer tablet Measured mass of crucible with anhydrous copper sulfate: 37.3005g. PDF Experiment 4 Hydrates and Anhydrous Salts Placed crucible on mesh pad using tongs (from this point, the crucible was handled solely with tongs until the experiment concluded), and allowed to cool to room temperature. When it is all white the water has been removed and the anhydrate is left. Solutions were made up of two parts, the solute and the solvent. cup' method. home experiment - Where's my experimental error coming from Measured mass of crucible with anhydrous copper sulfate: 37.3005g Return the evaporating dish with the hydrate to the wire gauze. Instead you are to complete the three problems below in your lab book using what you learned from the lab. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. When this color change appears to be complete, add 3 to 5 mL of water and observe the color of the dissolved substance. 5 H 2 O 6. 10/4/17 They are typically named by stating the name of the anhydrous component followed by the Greek prefix specifying the number of moles of water present then the word hydrate (example: \(\ce{MgSO4*7H2O}\): magnesium sulfate heptahydrate). The salt is magnesium sulfate - MgSO 4 and, the same as Copper sulfate, it exists as a hydrate, but in this case we will find the amount of water surrounding the compound. Note the color of the dissolved residue. 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. Lab Report However, because the solutions were not mixed long and thoroughly enough, this made further deviations from what the data should have looked like. Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Guided Inquiry Lesson, Composition of a Hydrate Chemical Formula Lab, Naming & Writing Chemical Formulas: Acids & Hydrates |Distance Learning, Naming & Writing Chemical Formulas-LESSONS BUNDLE, Drink more water- hydrating, refreshing, natural. Weigh the samples and record the masses as final masses. ), Not all of the water may have evaporated during heating (Also unlikely, for the same reason as the one above. When this anhydrous compound is dissolved in water it will go back to the original red burgundy color. Observations on structure, texture , wetness, etc. The number you found for the water replaced the x in the formula CuSO4 xH2O. Download the preview file to get a look! 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. To achieve this, a known mass of hydrated salt was heated, evaporating the water (essentially distillation). Record the mass and place the solute into a 50 mL volumetric flask. Copyright 2023. T, Concepts:This worksheet teaches students how to determine the number of water molecules in a hydrate. Some chemicals, when exposed to water in the atmosphere, will reversibly either adsorb it onto their surface or include it in their structure forming a complex in which water generally bonds with the cation in ionic substances. Why do men's bikes have high bars where you can hit your testicles while women's bikes have the bar much lower? To determine the mass of the water, subtract the anhydrate from the hydrate and put it in the proper space above. In this lab, a SpectroVis was used to determine the concentration of an unknown substance. When you would go to mass the anhydrous salt, some of the mass would be missing as it would be in the air. . Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. The reason why this is a source of error is because as time passed between the measurements, the copper sulfate hydrate sample absorbed humidity (water) from the atmosphere and therefore increased its mass. What are the sources of errors in the experiment of determine of Lab Report when does coordination become the distinctive task of management why? 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 How did it compare to the actual (it is given to you in step 3 of the calculations)? Calculate your % error: "absolute value of . ), Human error is always in effect, given that the laboratory does not function under ideal conditions. Measure out between 1 and 4 grams of copper sulfate hydrate that you have crushed into the crucible. TPT empowers educators to teach at their best. Materials: Tests tubes (small or medium size), watch glasses, crucible* and cover*, crucible tongs, clay triangle. 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. To find the expected error in the answer, $\Delta X$, assuming no error in the molecular masses, we calculate: For sulphate salts, all are soluble except Lead Some compounds like carbohydrates release water upon heating by decomposition of the compound rather than by loss of the water of hydration. Also, to see the color of each reaction determining the amount of energy released using our color scale. 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. For example, if a given amount of hydrated copper(II) sulfate gave off 0.060 mole of H 2 O and left behind 0.012 mole of anhydrous copper(II) sulfate, CuSO 4, then the ratio of H 2 O to CuSO 4 is 5:1, and the formula would be written as CuSO 4 5H 2 O. Empirical Formula of a Hydrate Chemistry Lab. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. Two sources of error include _____. If, like @brinnb suggests, an additional reduction in $W_e$ could be expected due to adhered water say that the error in $W_e$ is $0.1$ g you already get to $\Delta X=0.17$ mol water per mol copper sulphate. In other words, the chemical equation BaCl2 + 2H2O (s) BaCl2 + 2H2O (g), labeled as 5.3 in the original lab report, is best used to describe the transition which took place during this portion of the lab. rev2023.5.1.43405. You will be able to edit the document to your needs and share it with your students. anyhydrous salt, which forms one half of the experiment, may not be However, I understand that sharing information required for a lab report or unknown submission (including but not limited to word processing or spreadsheet files, calculations, graphs, conclusions and additional problems at the end of the lab report) with other students is, evaporating dish, Bunsen burner, wood splint, test tubes, micro spatula, dropper, mortar and pestle, test tube holder, safety goggles, lab apron.
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