Alchine Flashcards

1
Q

Formula generala

A

CnH2n-2

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2
Q

Metode de obtinere

A
  1. Sinteza directa din elemente
  2. Dehidrogenarea alcanilor
  3. Dehidrogenarea alchenelor
  4. Eliminarea hidracizilor sau halogenilor
  5. Alchilarea alchinelor terminale
  6. Piroliza metanului
  7. DESCOMPUNEREA CARBURII DE CALCIU - CARBID
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3
Q

Sinteza din elemente

A

C + h2 > c2h2
2500-3000 grade c

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4
Q

Dehidrogenarea alcanilor

A

CnH2n2 > CnH2n-2 + h2
Ni, Pt, Pd

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5
Q

Dehidrogenarea alchenelor

A

CnH2n > CnH2n-2 + h2
Ni

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6
Q

Eliminarea hidracizilor sau halogenilor

A

RCHX-CHXR’ > R-C=-C-R’ + HX
KOH SI ALCOOL
R-CX2-CX2-R’ > R-C=-C-R’ + X2
KOH SI ALCOOL
R-CH=CH-R’ > RC=-CR’
KOH SI ALCOOL

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7
Q

ALCHILAREA ALCHINELOR TERMINALE

A

R-C=-CNA + R’X > R-C=-C-R’ + NAX

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8
Q

PIROLIZA METANULUI

A

CH4 > C2H2 + H2
1500

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9
Q

PROPRIETATI CHIMICE ALCHINE

A
  1. ADITIA HALOGENILOR
  2. ADITIA HIDRACIZILOR
  3. ADITIA HIDROGENULUI
  4. ADITIA AC CIANHIDRIC
  5. ADITIA APEI
  6. ADITIA ALCOOLULUI
  7. ADITIA AC CARBOXILICI
  8. ADITIA TIOLILOR
  9. ADITIA AMINELOR
  10. REACTII DE CARBONILARE
  11. ADITIA AC BROMHIDRIC
  12. ACETILENE + S \ NH3
  13. ACETILENA + N
  14. POLIMERIZARE
  15. OXIDARE BLANDDA
  16. OXIDARE ENERGICA
  17. ARDERE
  18. SUBSTITUTIE CU METALE DIN I SI II
  19. COMBINATII COMPLEXE CU METALE TRANZITIONALE
  20. IZOMERIZARE
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10
Q

Descompunerea carbidului

A

Carbid + h2o > c2h2 + ca(oh)2

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