Description The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from the reaction between sodium metal and fluorine gas. Which properly represents the balanced chemical equation for this reaction? Na(s) + F2(g) ? NaF2(s) Na(s) + F(g) ? NaF(s) 7Na(s) + F(g) ? Na7F(s) 2Na(s) + F2(g) ? 2Na2F(s) 2Na(s) + F2(g) ? 2NaF(s) Why is it important to understand this equation? What do you think could happen if this is incorrect?
Description This assignment serves as the lab assignment for the properties of ions lab. Please complete the below document and upload it to the assignment submission. If the submission does not work, please email me your assignment.
Description Reference video on Using KHP to standardize NaOH (Links to an external site.) Reference video on titrating an acid sample with NaOH (Links to an external site.) Be sure that the pages are in order, that they are completely visible and legible, and upload them here as a SINGLE PDF FILE. Don't forget to include the page at the end of the virtual experiment indicating that you completed the lab successfully (or unsuccessfully if that may be the case.)
Description TASK Using the solutions in the ChemCollective Virtual Lab stockroom, design an experiment to determine the arrangement of Br2, Cl2, and I2 in order of strongest to weakest oxidizing agent. Describe the method you developed, as well as how you would analyze the results. ASSESSMENT OBJECTIVES This activity is designed to assess student skill in designing an experiment to determine the relative oxidizing strengths of the halogens and in presenting the findings. A student must be able to demonstrate control of variables and to apply the fundamental concepts of redox chemistry. MATERIALS AND EQUIPMENT Chemicals Equipment M NaCl M NaBr M NaI Cl2-water or Cl2(aq) Br2-water or Br2(aq) I2-water or I2(aq) All glassware and equipment available in the Virtual Lab Submit a report that includes YOUR NAME and the following headings: PROBLEM HYPOTHESIS EXPERIMENTAL DESIGN AND METHOD: (i.e., briefly describe the method you developed to solve the problem and then write a step-by-step procedure.) DATA & RESULTS BRIEF ANALYSIS OF DATA AND RESULTS, INCLUDING CONCLUSION
Description List the starting materials, solvent, reagent, temperature range (low, room temp, or high) and products formed: 2. How long did it take to finish the reaction? 3. List any important IR peaks (If no noteworthy peaks, answer “none”). 4. List any IR peaks NOT PRESENT that indicate the product was formed? (Hint: think about the functional groups of the starting material and the product) (If not, answer “none”) 5. List the 1H NMR peaks. List the peak number, chemical shift, multiplicity (splitting pattern), and the integration. 6. List the 13C NMR peaks. List the peak number and the chemical shift.
