copper sulfate hydrate lab sources of error
copper (II) sulfate hydrate. Using crucible tongs, clean a porcelain crucible and its cover using concentrated nitric acid (6 M). Record the values as initial masses of containers and samples. Molarity is calculated by diving the number of moles in the solute by the volume (in liters) of the complete solution. What does that x value tell you? Your teacher's name. Introduction 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. 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. 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. |Score | . Write the goal of the lab or the question you tried to answer. Digication ePortfolio :: General Chemistry (Alexander Antonopoulos which works out to: Safety: Patel ), Not all of the water may have evaporated during heating (Also unlikely, for the same reason as the one above. The lab requires bunsen burners, rings, ring stands, crucibles, crucible tongs, and balances. 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. Materials: Tests tubes (small or medium size), watch glasses, crucible* and cover*, crucible tongs, clay triangle. Write the chemical formula of the hydrated form of your unknown sample. 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. All metal sulphate are soluble in water, except barium Hydrated copper sulfate (CuSO 4), hydrated ferrous sulfate, hydrated cobalt sulfate, sucrose, epson salt, 4 test tubes, . 10/3/12 In this lab, the five general types of chemical reactions were conducted and observations. What should I follow, if two altimeters show different altitudes? cup' method. or iron(III) compounds, when exposed to air. 1. The purpose of this lab is to determine the relationship between moles of copper sulfate and moles of water in a hydrate. * Cup heat loss to the surroundings if you using the simple 'insulated Use caution when heating the crucible and cover. We would call this copper sulfate pentahydrate. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Materials: ), During heating, some of the hydrous salt may have spattered, thus removing a portion of the hydrous salt from the crucible (A more likely source of error, considering that this would result in a greater difference between the two ratios, and percentages. Learn more about Stack Overflow the company, and our products. 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. Lab reports are due week of September 29 October 3, 2014. 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. Blind Fury Rapper Death,
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copper sulfate hydrate lab sources of error