Reference no: EM131295972
Organic Chemistry Carbohydrates
1. What experimental results do you expect to see from Bial's Test with the following types of sugars. Answer with a specific qualitative observation or "N/A, not applicable". 1 point each
a. Pentoses
b. Hexoses
c. Disaccharides & polysaccharides
2. Name the chemical that pentoses produce when they dehydrate under acidic conditions. This chemical then reacts with the orcinol and ferric chloride in Bial's reagent to produce a colored condensation product, which is the positive test result.
3. What experimental results do you expect to see from Benedict's Test with the following types of sugars? Answer with a specific qualitative observation or "N/A, not applicable".
a. Monosaccharides
b. Polysaccharides
4. What is the structural difference that determines whether or not a disaccharide will give a positive test result with Benedict's reagent?
5. Write a chemical equation for the formation of the red precipitate in the Benedict's test. Must the sugar be in the open-form or cyclic form to reduce the Benedict's reagent?
6. Why does starch produce a blue/black colored solution with iodine? Why does the blue/black color disappear when sodium thiosulfate is added?
7. What is the procedure added as a modification to Part E, Hydrolysis of Sucrose, meant to demonstrate?
8. Write the structures of the products for the acid hydrolysis of sucrose. What is the purpose of testing the resulting hydrolysis solution with Benedict's reagent?
|
Establish document standards
: Short answers questions for "Establish document standards". Both questions 1 and 2 to be answered.
|
|
What should be checked first
: A workstation has just been installed on an ethernet LA, but cannot communicate with the network. What should be checked first?
|
|
What is the profit for each company
: What is the profit for each company at the indicated sales volume - what is the breakeven point in units for each company and what is the degree of operating leverage for each company at the indicated sales volume?
|
|
Associated with dot-matrix printers
: What is the paper feeding technology most commonly associated with dot-matrix printers?
|
|
What is the procedure added as a modification to part e
: What is the procedure added as a modification to Part E, Hydrolysis of Sucrose, meant to demonstrate? Why does starch produce a blue/black colored solution with iodine?
|
|
Why was the choke you made the smart choice
: He would likely insist that surely there must be some way of coming out ahead if we only think about it long enough. Show why this is not the case, and why there is no expected benefit from entering into this situation. OR If you choose to partic..
|
|
Interruption resulting in corrupted data
: What device prevents power interruption resulting in corrupted data?
|
|
Creation of a foreign exchange rate risk management
: INT 620 Final Project - creation of a Foreign Exchange Rate Risk Management in Multinational Enterprise in Business Strategy. You will examine how a multinational enterprise (MNE) uses foreign exchange risk management in its business strategy.
|
|
Record of daily cash transactions in a text file
: Question 1: A store owner keeps a record of daily cash transactions in a text file. Each line contains three items: The invoice number, the cash amount, and the letter P if the amount was paid or R if it was received.
|