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HC Ξ CH + Cl2<br />
HC Ξ CH + Cl2<br />
c)Adiţia acizilor :<br />
faza gazoasa<br />
<br />
2 C + 2 HCl<br />
CCl 4<br />
2<br />
Cl HC = CHCl <br />
Cl<br />
Cl2 HC – CHCl2<br />
1,2- dicloroetenă 1,1,2,2-tetracloroetenă<br />
HgCl 2<br />
/ tC<br />
polimeriza<br />
HC Ξ CH + HCl <br />
H2C = CHCl <br />
(– H2C – CHCl–)n<br />
clorură de vinil policlorură de vinil<br />
(CH COO) 2Zn/tC<br />
<br />
3<br />
HC Ξ CH + CH3– COOH <br />
Cu Cl , NH 4Cl/tC<br />
<br />
2 2<br />
HC Ξ CH + HCN <br />
d)Adiţia apei :<br />
HgSO 4/H SO<br />
<br />
2 4<br />
HC Ξ CH + HOH <br />
HgSO 4/H SO<br />
<br />
2 4<br />
HC Ξ C – CH3 + HOH <br />
2. Reactia de polimerizare :<br />
a) dimerizarea<br />
re<br />
H2C = CH– OCOCH3<br />
acetat de vinil<br />
H2C = CH– CN<br />
acril<strong>on</strong>itril ( cianură de vinil)<br />
[ H2C = CH–OH] H3C–CH=O<br />
alcool vinilic etanal (acetaldehidă)<br />
tautomerie<br />
[ H2C = C – CH3] H3C –CO– CH3<br />
l propan<strong>on</strong>ă<br />
OH (acet<strong>on</strong>ă)<br />
tautomerie<br />
Cu 2Cl<br />
2,<br />
NH 4Cl/tC<br />
HC Ξ CH + HC Ξ CH HC Ξ C – HC = CH2 <br />
HCl H2C= C – HC = CH2<br />
vinilacetilenă l<br />
Cl cloropren<br />
b) trimerizarea<br />
600 800C/tubur i ceramice<br />
3 C2H2 <br />
C6H6<br />
benzen<br />
3 HC Ξ C – CH3 → C6H3 (CH3)3<br />
mesitilen (1,3,5 -trimetilbenzen)<br />
3. Reacţia de oxidare:<br />
a) Oxidarea cu KMnO4<br />
HC Ξ CH + 4*O+ → HOOC – COOH<br />
acid etandioic (acid oxalic)<br />
HC Ξ C – CH3 +3 *O+ → H3C –CO–COOH<br />
Acid α cetopropi<strong>on</strong>ic (acid piruvic)<br />
b) Arderea<br />
C2H2 + 5/2O2 →2 CO2 + H2O + Q<br />
4.Reacţia de formare a acetilurilor<br />
Acetilurile metalelor alca<strong>line</strong> şi alcalino-pământoase.<br />
150C/ 1/2H 2<br />
Na,200C/ 1/2H 2<br />
HC Ξ CH + Na <br />
HC Ξ C - Na + <br />
Na +- CΞC - Na +<br />
acetilură m<strong>on</strong>osodică acetilură disodică<br />
6