Chemistry collective virtual simulator, Chemistry

Introduction

This lab will be performed using the Chemistry Collective Virtual Lab Simulator. The ChemCollective is an award winning chemistry online resource. In addition to the Virtual Lab they also offer tutorials, practice problems, reference tools, simulations and other activities for student (and instructors).

This lab takes very little time to complete if you are well prepared and do exactly what the lab requests. If you are unprepared or are in a hurry, the lab can take a very long time to complete.

Directions

1. Your submitted Lab Report should include ALL of the information in this document (excluding the footer). A simple cut and paste to your word processing software should get you started with a lab report template.

2. Name your report using your last name to: Lab ## Last Name

3. Supplement this report template with the below requested information

4. Include a separate title page of your own design. Include your own name, assignment title, instructor name, course name, date submitted, and list all collaborators.

5. Complete the lab and submit to instructor using Sakai Assignment tool as a Word (DOC or DOCX) or Adobe (PDF) document prior to specified date and time.

Laboratory Background

DO NOT follow the ChemCollective Problem Description! Instead follow the below problem description.

For the this lab, we'll consider and use the following balanced chemical reaction

NaCl(aq) + AgNO3(aq) ? NaNO3(aq) + AgCl(s)

All of the species (ions and molecules) in the above reaction exist as ions or a solid in solution:

NaCl(aq) exists as Na+ and Cl- ions in solution

AgNO3(aq) exists as Ag+ and NO3- ions in solution

NaNO3(aq) exists as Na+ and NO3- ions in solution

AgCl(s) exists as a white solid precipitate (molecule)

The ChemCollective Solution Viewer (Solution Info....) provides important solution information for the lab. It will determine species molarity, moles, or mass (g) when  the "Aqueous" radio button is selected. It determines species mass (g) when the "Solid" radio button is selected. The "Gas" radio button is not used.

Use the solutions and chemicals provided in the Virtual Lab Stockroom and the Solution Viewer to determine the following information. Report the laboratory observations and requested calculations results in the Laboratory Observations and Calculations Table.

Part 1a: The solution labeled "1.00 g NaCl" contains 1.00 g of NaCl dissolved in water. Use the solution viewer to determine the number of grams of Na+ and Cl- in the solution, and confirm that these total 1.00 g.

Part 1b: The Erlenmeyer Flask labeled "1.00 g AgNO3" contains 1.00 g of solid AgNO3. Add 100 ml of water to this solution. Use the solution viewer to determine the number of grams of Ag+ and NO3- in the solution.

Part 1c: Add the 1.00 g of solid AgNO3 to the 1.00 g solution of NaCl. Write down the mass of each species in solution and the mass of solid AgCl formed. Confirm that the amounts of these species are consistent with what you determined in Part 1a and Part 1b.

Part 2a: The solution labeled "Solution 1" in the virtual lab stockroom contains 2.00 grams of Sodium Chloride. Calculate (using the above reaction) the number of moles and grams of Silver Nitrate required for a balanced reaction.

Part 2b: Use the virtual lab to add the calculated number (from Part 2a) of grams of Silver Nitrate to "Solution 1". Check to make sure the reaction is complete, by verifying the amount of Ag+ and Cl- in the solution is both less than 0.01 g. The reaction is complete when the precipitate stops forming-use the "Solid" radio button to report the number of grams of AgCl produced.

Part 3a: The solution labeled "Solution 2" in the virtual lab stockroom contains 3.00 grams of AgNO3. Calculate (using the above reaction) the number of moles and grams of NaCl required for a balanced reaction. Calculate how many grams of AgCl(s) will be produced in the reaction?

Part 3b: Use the virtual lab to verify your answer to Part 3a. Explain the laboratory procedure you used to perform the verification.

Part 3c: Add excess NaCl to the solution labeled "Solution 2" (as much as you want). What is the maximum number of grams of AgCl(s) formed? The reaction is complete when the precipitate stops forming-use the "Solid" radio button to report the number of grams of AgCl produced.

Laboratory Objective

1.  Perform precise chemical transfers and observations

2.  Apply the law conservation of mass using balanced chemical reactions

3.  Understand how moles and mass of reactants and products are interrelated in balanced chemical reactions

4.  Apply critical thinking to summarize data and make conclusions

List of Materials

1.  A list of material used to complete this lab is provided by student and placed here

Laboratory Procedure

1.  An brief ordered list (outline) detailing the procedure to complete the lab is provided by student and placed here. Explain requested Part 3b procedure here.

 Calculations Confirming Laboratory Results

Show the requested laboratory calculations here. Show the requested laboratory calculations here. Clearly show dimensional analysis and all numbers, units, and substances used during calculations.

Using: NaCl(aq) + AgNO3(aq) ? NaNO3(aq) + AgCl(s)

 Part 2a: The solution labeled "Solution 1" in the virtual lab stockroom contains 2.00 grams of Sodium Chloride. Calculate (using the above reaction) the number of moles and grams of Silver Nitrate required for a balanced reaction.

Part 3a: The solution labeled "Solution 2" in the virtual lab stockroom contains 3.00 grams of AgNO3. Calculate (using the above reaction) the number of moles and grams of NaCl required for a balanced reaction. Calculate how many grams of AgCl(s) will be produced in the reaction?

Posted Date: 3/15/2013 1:19:30 AM | Location : United States







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