copper sulfate hydrate lab sources of error

Heating will shift the equation of dehydration below to the right since it is an endothermic reaction. What does that x value tell you? Record the values as initial masses of containers and samples. The goal of this experiment was to determine the product of copper (II) sulfate with iron. In this section we will demonstrate the dehydration and re-hydration of cobalt (II) chloride hexahydrate. Hypothesis: If dyed lichen is exposed to certain chemicals, than color will color the solution. 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. Texas Chemistry Standards (TEKS) Accessibility StatementFor more information contact us atinfo@libretexts.org. This was determined by recording the absorbance values of five solutions of Copper Sulfate and distilled water of different molarities. Use crucible tongs when cleaning the crucible with concentrated nitric acid. Given that the mass of the hydrated salt is known, it is also given that the mass lost is equivalent to the mass of the water. 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. * Cornstarch If youve read this far, Im already grateful, but Id be even more so, if anyone could suggest where the difference between 5 and 5.18 is coming from. If the correct formula of copper sulfate is CuSO4.5H20, determine your percent error. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. How do you feel in the morning when you wake up? has a mass of 4.31 g before heating. 6. C.7.A: The student is expected to name ionic compounds containing main gr, Lab: Determining the Composition of a HydrateFor students in Grades 8-12.INTRODUCTION:Hydrates are ionic compounds that have a number of water molecules attached as part of their structure. * Hot plate Assumed water content: 42.6841.98 = 0.7g (!!!). Hydrated Copper (II) Sulphate Experiment Report Ammonium sulphide. * Iodine Little or no prior knowledge of finding empirical formula necessary. Building on previous knowledge of ions and formulas from Part One & Two are included in the Exit Ticket and the Homework. The purpose of the flame test lab was to further study the process of electron excitation. Copper Sulfate Lab Report - 773 Words | Bartleby The accepted value is about #36.075%# , so I would say that your results are not ideal, but that they should fall within the accepted range. Legal. which is stored for some time will have iron(III) sulphate * Evaporating dish Materials: Crucible and lid (or use aluminum foil if you don't trust children to drop the lids), electronic balances, bunsen burners, tongs, strikers, clay triangles, ring stand and ring. The copper sulfate is dissolved in 100ml of water that is distilled and contained in . Measure out between 1 and 4 grams of copper sulfate hydrate that you have crushed into the crucible. Let's face it, percent composition and empirical formulas are not the most exciting concepts to teach in chemistry. ; (NH4)2S. The purpose of this bundle is to offer a worksheet to cover every type of naming.Goes Well With My Other Nomenclature Worksheets.NomenclaturePossible Uses- Worksheet- Activity- Homework- Classwork- Test Review- Quiz ReviewFeedbackHave questions or feedback? * Watch glass The solvent was the dissolving substance and the solute was the substance being dissolved. Lab written for Hotplate or Bunsen burner.Students: Observe water leaving compound as steam Heat to constant mass Calculate percent water Re-hydrate the anhydrous compoundLab Contains: Student Lab Sh, This lab is a great way for your students to investigate what a hydrate is and how its formula is determined. 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. Is there any known 80-bit collision attack? Score The water present in the latter case is called water of hydration or water of crystallization. How to force Unity Editor/TestRunner to run at full speed when in background? So the practical involved taking hydrated copper sulphate, heating it to drive off the water, weighing before and after, and thus calculating the number of water molecules of crystallisation, based on the respective molecular weights of the anhydrous salt and water. heat loss to the surroundings if you using the simple 'insulated Determining the Water Percentage Within Copper Sulfate - WritingBros 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). Abstract Chemical Reaction Lab Report (However, this is not likely to be the sole cause of the inaccuracies within this experiment, though it may contribute to it. PDF Hydrate Lab By Maya Parks 2/20/15 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.

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