Chemistry Theoretical Yield & Percent Yield Experiment Questions
Hi! There are two sets of experiments with their questions. Please answer them according to the experiment and the data. Make sure you use infomration from data and from procedures if necessary.
Experiment 1:
3. Calculate the percent yield of your reaction.
4. Calculate the percent error of your reaction.
5.Compare the melting point of tour product with the literature value. Explain any
differences between the two. 6. What is the catalyst in this reaction? 7. What is the limiting reagent in this reaction? 8. Potassium chlorate decomposes upon slight heating in the presence of a catalyst, according to the reaction below. In a certain experiment, 50.3 g KClO3 is heated until it completely decomposes. What is the theoretical yield of oxygen gas? ***Molar mass of KClO3 = 122.55 g/mol ***Molar mass of O2 = 32.00 g/mol 2KClO3(s) ? 2KCl(s) + 3O2(g)
9. List possible errors.
Experiment 2:
1. To test for proteins, what reactants were used in the experiment? Was protein found? Use evidence to support answer. 2. Was phosphate found in the bones? Use evidence to support answer. 3. To test for Iron III, what reactants were used in the experiment? Was Iron III found? Use evidence to support answer.
4.To test for calcium and magnesium, what reactants were used in the experiment? Were
calcium and magnesium found in the bones? Use evidence to support answer. 5. Describe collagen and its uses. 6. What do lemon juice, vinegar, and oranges have in common? What will be the effect in your teeth of eating too much of them?
7. List possible errors that could’ve occurred.
