I bob. Organik kimyoning tuzilish nazariyasi 1-§. Organik kimyo tarixi. Organik birikmalarning o‘ziga xos xususiyatlari

Mavzuga oid masalalarning yechimi.
1. Molekulyar massasi 56280 g/mol bo’lgan poliizobutilenning polimerlanish
darajasini hisoblang.
Masalaning yechimi:
Poliizobutilen izobuilenning polimerlanish reaksiyasidan olinadi. Shu
sababli reaksiya tenglamasini yozib olamiz.
n CH2 C
CH3
CH3
( CH2 C
CH3
CH3
) n
Reaksiyada qatnashayotgan monomerning polimerlanish darajasini to151
pish uchun qatnashga monomerlar soni aniqlanadi.
Izobutilenning molekulyar massasi 56 g/mol
Polimerning molekulyar massasi esa 56280 g/mol
η= 56
56280 =1005
Demak jarayonda 1005 molekula izobutilen qatnashgani aniqlandi.
Javob: 1005
2. Poliizobutilenning polimerlanish darajasi 550 ga teng bo’lsa, polimerning
molekulyar massasini hisoblang.
Masalaning yechimi:
Masalani yechish uchun molekulyar massani hisoblash tenglamasidan
foydalanamiz: M=m∙n m-monomerning molekulyar massasi ya’ni 56 g/mol.
n-esa polimerlanish darajasi 550.
550 CH2 C(CH3)2 (-CH2-C(CH3)2-)550
Izobutilenning molekulyar massasi 56 ∙550=30800
Demak polimerning molekulyar massasi 30800 ga teng ekan. Javob: 30800
Mavzuga oid masala va mashqlar.
1. Divinilning polimerlanish reaksiyasini yozing va polimer tarkibidagi
monomerni ko‘rsating hamda polimerlanish darajasiga ta’rif bering.
2. Quyidagi moddalar polimerlanish reaksiya tenglamalarini yozing:
a) etilen; b) propilen; c) izopren;
3. 2-xlorbutadiyen-1,3 dan xloropen kauchugining olinish reaksiyasini yozing.
4. Qaysi yuqori molekulyar massali birikma polikondensatsiya reaksiyasi
natijasida olishini toping va reaksiya tenglamasini yozing:
1) Butadiyenkauchuk 2)Fenolformaldegidsmola
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3)Polipropilen 4)Polivinilxlorid
5. Molekulyar massasi 13500 g/mol bo’lgan polibutadiyenning polimerlanish
darajasini hisoblang.
6. Molekulyar massasi 62500 g/mol bo’lgan polivinilxloridning polimerlanish
darajasini hisoblang.
7. Molekulyar massasi 18480 g/mol bo’lgan poliizobutilenning polimerlanish
darajasini hisoblang.
8. Polibutadiyenning polimerlanish darajasi 1020 ga teng bo’lsa, polimerning
molekulyar massasini hisoblang.
9. Polivinilxloridning polimerlanish darajasi 980 ga teng bo’lsa, polimerning
molekulyar massasini hisoblang.
10. Poliizobutilenning polimerlanish darajasi 1085 ga teng bo’lsa, polimerning
molekulyar massasini hisoblang.
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