Testing the actual yield versus the theoretical yield of NaCl when HCl is titrated into Na2CO3 and NaHCO3. When 0.15g of both NaHCO3 and Na2CO3 are titrated with HCl, then 0.165g of NaCl should form from the NaHCO3, and 0.104g of NaCl should form from the 0.15g of Na2CO3.…
3.) Place 5mL of vinegar in a 125 mL Erlenmeyer flask. Dilute the vinegar with 25 mL of water and add two drops of phenolphthalein.…
Titration is a method, which is meant to find the concentration of either an acid or a base by adding a measured amount of it to a known volume and concentration of an acid or base1. Titration starts with a beaker or Erlenmeyer flask containing a very precise volume of the known concentration solution and a small amount of indicator, which is put underneath a burette containing the solution with unknown concentration1. Small drops of the titrant are then added to the known solution and indicator until the indicator changes which means the endpoint has been reached. Single drops of the titrant can sometimes make a permanent or temporary change in the indicator2.…
Prediction: We predict that the amount concentration of acetic acid in a sample of vinegar is 0.83 mol/L.…
Examine Texts one, two, three and four carefully and then answer the questions on page 7.…
Part B (Do not write here) 1. 2. 3. Part C (Do not write here) 1.…
How much can we know by simply reading the nutrition facts on the back of any packaged foods? Certain nutrition facts are given and in most cases the most important or common, such as the amount of sodium, amount of protein, the total fat, and the amount of calories among others. But what guarantees that these nutrition facts given are correct or accurate? It is known that not everything on the nutrition labels may be true. Little do people know that not everything on the nutrition facts is accurate which are mandated by the U.S. Food and Drug Administration (FDA). There is a law that requires that values of specific nutrients be reported in a standardized format. This act is known as the Nutrition Labeling and Education Act (NLEA) (1).…
Examine Texts one, two, three and four carefully and then answer the questions on page 9.…
9) Joint 4. Answer: A Diff: 2 10) Joint 5. Answer: C Diff: 2 11) Joint 6. Answer: C Diff: 2…
In this lab, there was a comparison between accuracy and precision of densities measured by volume. Mass measurements are often used units in the metric system. Volume can be examined a borrowed unit. The volume measurements were made in mL. Every measurement had a level of hesitancy affiliated with it. The experiment could feel uncertain from the object used for measurement and from the accuracy of the person doing the measuring of the volume. Because of this uncertainty, the experiment must be repeated for better precision. The following results and data show the calculation of the density of three liquids: water, rubbing alcohol, and vinegar; each substance was tested three times to determine the average density observing the rules of significant…
To help you, the solutions to several problems are already provided. Be sure to type your answers at the indented points after each enumeration to avoid the problem of automated numbering.…