Question

Se copolimerizeaza 100 moli butadiena cu cianura de vinil(acrilonitril,cianoetena),in raport molar 1:3. Scrie ecuatia reactiei chimice care are loc si calculeaza masa de copolimer obtinuta.

Answer 1

nxCH2=CH-CH=CH2 + nyCH2-CH-CN => [(-CH2-CH=CH-CH2-)x(-CH2-CH-CN-)y]n

x/y=1/3 => y=3x => y=75 moli

4x=100 => x=25 moli

m copolimer = (25*54+75*53) = 5325g

Nu sunt sigur..

MC4H6 = 54g/mol

Mcianura = 53g/mol