Chemlab

Card Set Information

Author:
hmgarcia
ID:
217180
Filename:
Chemlab
Updated:
2013-05-02 00:03:37
Tags:
Test2
Folders:

Description:
Lab
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user hmgarcia on FreezingBlue Flashcards. What would you like to do?


  1. What carbs produce red orange solid w Benedict's and red with seliwanoffs reagent
    Ketose
  2. What carb gives color change w Benedict's , light orange w seliwanoffs and no bubbles during fermentation
    Aldose
  3. What carb gives no color change with Benedict's or seliwanoffs but turns blue blacks with iodine reagent
    Starch
  4. What sugars give positive fermentation test
    Sucrose and starch
  5. Which carb gives a blue black color in iodine tests
    Starch
  6. Which sugars are reducing
    Glucose lactose and fructose
  7. Which sugars are non reducing
    Sucrose and starch
  8. What sugars are ketoses
    Frutcose
  9. What happens to glucose or galactose when the cu2+ in Benedict's reagent is reduced
    They are oxidized to carboxylic acids
  10. WouldWould you expect fructose or galactose tfrom a red color rapidly with seliwanoffs reagent
    Fructose because. It's a ketose
  11. Wy don't all disaccharides undergo fermentation with yeast
    The right enzyme is not present in yeast for some disaccharides such as galactose and lactose
  12. How can iodine test be used to distinguish between amylose and glycogen
    Amylose is a form of starch therefore it will turn blue black color. Glycogen will turn reddish purple

What would you like to do?

Home > Flashcards > Print Preview