Question

stie cineva ? cele incercuite. va rog

Answer 1

4.  FORMULA GENERALA:  CnH2nO  ,cu msa molara M=(12ngC+2ngH+16gO)mol
Calc.n:   in 100g aldehida   contine  69,76gC
               14n+16                             12n--->  1200n=69,76(14n+16)-->n=5
CH3-CH2-CH2-CH2CHO     PENTANAL
CH3-CH2-CH(CH3)-CHO   2`metil butanal
CH3-CH(CH3-)CH2-CH0   3 metil butanal
CH3-C(CH3)2-CHO           2,2,dimetil propanal
verifica calculele !