-
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6. reaction of nitrogen gas with hydrogen 82S
2 NH.(⑧
N@ 3 HH@
グ 太 El
cxidized N reduced 旧
ineral o7g7coc76)
7. production ofcopper metal fom its sulfide as found in rocks (Cu。S, the miner2 2
SO,⑮
CuSG) + O,@ つ 2 Cu⑮ ky ィ N
+| っ の ケ 1
oxidized 。S redueed Cu ()
8。 elemental bromine can be cxtracted from seawater using chlorine ga
2 Brの Ss 09 っ mg + CMの
ー| 選 の |
oxidized Br reduced C%
OrganismSigetitheir energy by COndHGHilFGGOXIEGHGHONSING “harvesting2 the energy released』軸heyineed
(1) something to oxidize (an electron donor whichis theirfood)
②⑫) Somefhmgt6 oxidize it with (am electron acceptorleigl 0 )
2. Here js an example ofa food molecule (glucose) being oxidized by oxygen in your body
CHi。0。(くの 店 6 0.(<の ーー 。 6CO:(@⑦ 直 6 H0⑰
辺 ダ +t ゝ 汗(時
oxdized reduced
10. some bacteria use sulfate as their oxidizer (electron acceptor) instead ofO。
mm fhis example, the bacteria are partially oxidizing lactic acid to produce acetic acid
NOTE: a fractional oxidation sfate is allowed for carbon @& this is not balanced as written
Jacfic acid acetic acid
CH。COOH(22) + HO⑦) + SOの つ CHiCOOH(42) + CO,(42⑦) + HS-(の
oxidized reduced
11. Bacteria can also use nitrate as (heir electron acceptor. As nitrate gains electrons, it tuns into several
other forms. Find the oxjdation state of nitrogen in each of them: which is most reduced and which is
mosf oxidized.
NO NO N, NHi
4
12. Bactera can use amn1Onium aS an energy SOurce when oxygen 1S Dresent tO Oxidize it、
2NHJ + 90。 ご 2N と 4HO
2 ィ| RI
oxidized reduced
