Describe the procedure for making the buffer, and the predicted pH of the buffer.
Describe the procedure for making the buffer, and the predicted pH of the buffer.
July 6, 2020 Comments Off on Describe the procedure for making the buffer, and the predicted pH of the buffer. Uncategorized Assignment-helphttp://chemcollective.org/vlab/104 This is the online Creating a buffer solution(adapted from ChemCollective)This homework uses the virtual lab. Using a computer that is running Microsoft windows or Macintosh OS 10.1 or higher, go to http://ir.chem.cmu.edu and click on “Virtual Lab” in the upper left-hand corner. You can then either,a) Run the lab as a Java Applet in a web browser by clicking on “Run the applet >>”.b) Download and install the lab on your computer, by clicking on “download” at the bottom of the page.To load the assignment, select “Load Homework…” from the “File” menu, and select “ Acids and Bases : Buffer Creation Problem”. Problem: You have three bottles, one filled with 1M NaAc (NaAc = sodium acetate), one filled with 1M Acetic Acid, and one filled with distilled water. You want to make a buffer that has pH=4.75, and such that when 1ml of 10M HCl is added to 100ml of buffer, the pH goes from 4.75 to 3.75 ±0.1. What concentration do you want HAc and NaAc to have in the buffer solution?Instructions:Write a procedure for creating the buffer specified above. The procedure should be written so that a fellow student may reproduce your results.Embed within your procedure snapshots from the Virtual Lab, which demonstrate how you created your buffer.Be sure to include all theoretical calculations which support your procedure.Include the above procedure as an attachment to the supplementary information in your lab report.(Bonus +5 points) Suggest how you could make a pH buffer using vinegar and sodium bicarbonate (baking soda). Describe the procedure for making the buffer, and the predicted pH of the buffer.for the lab report lay out:Title PageInclude your name and partner(s) name(s)Include date of submission of the reportInclude the name of the course, and the semester (CHEM 1110, Summer 2020)AbstractState major objective(s) and what were the major resultsThis should be written in past tenseMajor results would include:Wrote a procedure/protocol for creating a buffer with ________ specificationsThe amounts of solutions used and amount of buffer producedShould be no more than 4 sentences.IntroductionWhat is a buffer?For what are buffers used? Why are buffers important? Where may buffers be relevant to your major?What is the Henderson-Hasselbalch (HH) equation?How does the Henderson-Hasselbalch equation aid in buffer design?Explain the math/logic for designing a buffer with the specifications given in the worksheet.1 – 1.5 pagesResults and DiscussionInclude your step-by-step procedure, along with imbedded figures from the Virtual Lab, demonstrating your production of a buffer with the specifications.1 – 2 pagesConclusionsSummary of major resultsSuggestions for future students, on how best to approach this lab3 – 6 sentencesReferencesReference ChemCollectiveReference any sources used for background information on kinetics and rate lawsReference any other sourcesAny reference listed in the references section must be cited at least once in the body of the report. References should be cited using a numeric superscript corresponding to the number of the reference in the references list.For formatting references, use the ACS style guide: https://libguides.mq.edu.au/referencing/ACS (Links to an external site.)Supplementary InformationInclude the worksheet for the Buffers labNo limit on pagesAll images/figures/plots should be captioned and legible


