Lesson #19 Carbohydrates

Carbohydrates:

Carbohydrates are the most abundant ckass of organic compounds. Carbohydrates have general formula ( ). This formula suggests that they are hydrates of carbon with few exceptions. Recall that plants synthesize carbohydrates through photosynthesis.

Reaction:

6 H2O-II + 6 CIVO2-II → C60H12O6-II + 6 O20

This is an oxidation-reduction (redox) reaction:

6 CIV + 24 e- → 6 C0
(reduction)

12 O-II - 24 e- → 12 O0
(oxidation)

Plants coverts glucoseinto starch and cellulose. Carbohydrates are monomersand polymers of aldehydes and ketones that have numerous hydroxyl groups attached.