Find the accepted value of the Ksp for calcium hydroxide and compare it with your value. Damit Verizon Media und unsere Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie bitte 'Ich stimme zu.' Ksp of calcium hydroxide? Discuss the discrepancy and suggest possible sources of experimental error. Calculate the concentration of hydroxide in your sample based on experimental data. Wir und unsere Partner nutzen Cookies und ähnliche Technik, um Daten auf Ihrem Gerät zu speichern und/oder darauf zuzugreifen, für folgende Zwecke: um personalisierte Werbung und Inhalte zu zeigen, zur Messung von Anzeigen und Inhalten, um mehr über die Zielgruppe zu erfahren sowie für die Entwicklung von Produkten. Discuss the discrepancy and suggest possible sources of experimental error. Lab 10 - Solubility Product for Calcium Hydroxide Goal and Overview A saturated solution of Ca(OH) 2 will be made by reacting calcium metal with water, then filtering off the solids. - Formation of carbonic acid from CO2 in the air. K sp. Suggest a way to find the concentration of one of these ions using titration techniques. 2. The solid you will be working with in this lab is Ca(OH)2. A saturated, aqueous, solution of Ca(OH)2 is represented in equation form as shown below. Calcium hydroxide is an ionic solid that is sparingly soluble in water. Calculate the concentration of Co2tond molor solubility SURSCRIRE Endine FINAL - 580368 Determining the Ksp of Calcium Hydroxide FINAL.pdf (page 10 of 12) 54% Wed 10:0 Edite 19. Average Equivalence Point: 16.0 mL (.05 HCl). Calculate the Ksp for calcium hydroxide. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. ( 1 ) Ca(s) + H 2 O → Ca(OH) 2 (s) Ca 2+ (aq) + 2 OH − (aq) The concentration of dissolved hydroxide will be determined by acid-base titration with standardized HCl solution. The . 20. 1. Explain the values from the point-of-view of molecular structure. Repeat steps 7-19 for samples 2 and 3 on Data Table 2. The values in the previous question were entirely hypothetical. Explain your calculations. The approximate value of the Ksp for calcium hydroxide is 6.5 × 10 -6, and our experimental results gave us 6.2*10 -5, which is within reason. Used 29.38mL of .0506M of HCl to titrate 35mL of Ca(OH)2. Sie können Ihre Einstellungen jederzeit ändern. 4. To find a Ksp value, you really need to know the concentration of one ion. Compare the molar solubilities of calcium carbonate, barium hydroxide and sodium hydroxide to that of calcium hydroxide. Rinse the 25-ml flask. Write the expression for the Ksp of this solid. Sign in|Recent Site Activity|Report Abuse|Print Page|Powered By Google Sites, Experiment 22: Determining the Ksp of Calcium Hydroxide. Dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen. Ksp = 0.0190 X (0.0380)^2 = 2.74 X 10^-5 Repeat all of these calculations for the other two trials, and then average your values of Ksp. AP Chem Lab Book ('10-'11) of Brad Hekman, Experiment 12: Some Descriptive Chemistry, Experiment 13: Classification of Chemical Substances, Experiment 15a: Using Freezing Point Depression to Find Molecular Weight, Experiment 15b: Freezing Point Depression (Alternate), Experiment 17: The Rate and Order of a Chemical Reaction, Experiment 18: The Determination of an Equilibrium Constant, Experiment 24: Electrochemistry: Voltaic Cells, Experiment 99b: Anion Identification Virtual Lab, Experiment 99b: Cation Identification Virtual Lab, Experiment EC: Phase Diagram of t-Butyl Alcohol. Ksp (or solubility product) is the extent to which a salt dissociates in a solution into its respective ions. .016 L * .05M HCl = 8.0e-4 mol HCl => 8.0e-4 mol H+ => 8.0e-4 mol OH-, 8.0e-4 mol OH- / .036 L = .0222M OH- => .0111M Ca2+. Dies geschieht in Ihren Datenschutzeinstellungen. aus oder wählen Sie 'Einstellungen verwalten', um weitere Informationen zu erhalten und eine Auswahl zu treffen. It is one type of equilibrium expression that measures the solubility of ionic salts such as calcium hydroxide, in which a greater Ksp value indicates a higher solubility or more dissociation. We observed this happening. - Lag on pH sensor resulted in an erroneous equivalence point. Find the accepted value of the Ksp for calcium hydroxide and compare it with your value. Write the equilibrium equation for the dissociation of solid Ca(OH)2 in water. ~~~~~ First find Concentration of OH-: 3. 2. 1. Molar solubility values for these compounds maybe found in your lab manual in the Data Sheets section of Experiment 3. 6. Am I doing this right? Find Ksp? (2 marks) DATA. Yahoo ist Teil von Verizon Media. 15 Carolina Biological Supply Company 21. In this lab, you will write your own procedures for this process. For example, if you know that in solution the [OH-] = 8.0 x 10-6, what does the [Ca2+] have to be? The solubility product expression describes, in mathematical terms, the equilibrium that is established between the solid substance and its dissolved ions in an aqueous system. We have experimentally found the Ksp of Calcium Hydroxide, and our results are close to the dissociation of Calcium Hydroxide. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. - Drifting pH sensor.
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