chemistry questions

chemistry questions. Provide the final mass of product after recrystallization (show calculation).
Determine the theoretical yield of the product (salicylic acid) in grams and show all of your calculations. (Note: This is done just like you learned in general chemistry starting with the mass of the limiting reactant and converting to mass of the product).
Determine the percent yield of product (show calculation).
Provide the melting point range of the product.
What is the purpose of using a reflux condenser in organic reactions?
List three sources of error in your experiment. Please note that these should not be hypothetical, but rather sources of error that you believe affected your own experimental
results.
Provide answers to the following Exercises: 2, 5a,b, 6
2. Refer to the reaction equations in the “Reactions and Properties” sec-tion as you answer the following questions. (a) Which two hydrogenatoms of salicylic acid are most likely to be acidic? Which hydrogenatom(s) of methyl salicylate would you expect to be acidic? (b) Basedon your answer to (a), draw the structure of the white solid that formsimmediately after NaOH and methyl salicylate are combined, and writean equation for its formation. (Hint: Acid-base reactions are muchfaster than most organic reactions.)
Describe and explain the possible effect on your results of the follow-ing experimental errors or variations. (a) You added only enough 3 M H2SO4to bring the pH down to 4. (b) Your reaction mixture had an oilylayer on top when you added the 3 M sulfuric acid.
from the equations in the “Reactions and Properties” section, you cansee that methanol and sodium sulfate are by-products of the synthesis ofsalicylic acid. During which step of the synthesis would these compoundshave been separated from the final product? Explain your answer, basedon any relevant properties of salicylic acid and the by-products.

chemistry questions

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