ex 10: oxidation of a carbon source by microorgansisms

Question 1

what is the most oxidized state of carbon

Answer 1

co2

Question 2

how is carbon dioxide reduced

Answer 2

photosyntehsis

Question 3

co2 is transformed into what

Answer 3

carbohydrates, which can be converted back

irgabuc compounds such as protein amino acids

Question 4

why was NaoH used

Answer 4

as a co2 sink to measure how much co2 was obtained via aerobic respiration

indirectly can measure the amount of co2 that was evolved by determining how much naoh was used in reactin of

naoh + co2 = na2co3 + h20

Question 4

determine the amount of NaOh ued

Answer 4

find initial moles

C=n/v
vxc = n

find the moles of hcl used
volume used x C (M) =

do final moles - initial moles

Question 4

what was in the amended one

Answer 4

glucose

Question 4

method

Answer 4

glucose added to amended
naoh added using a tape and applicator stick stuck to cap
not added in, just sat on top of soil

Question 5

why dont we want Naoh tospill

Answer 5

will kill microorgansmis

Question 5

determine co2

Answer 5

the answer from above x22mg/ml