Răspuns:
M,butena=56g/mol
M,HEXENA= 84g/mol
CH2=CH-CH2-CH3+5O====>CO2+H2O+ CH3-CH2-COOH ori a moli
CH3-CH2-CH=CH-CH2-CH3 +4O===>2CH3-CH2-COOH............ori a moli
total masa hidrocarburi>
ax(56+84) =14g=====> a=0,1mol
total moli si masa acid propanoic..
niu=3x a,mol m= niuxM=0,3molx74g/mol=22,2gaceasta este masa dizolvata in apa, notata md
ms= md+m,apa= 22,2+177,8=> 200g solutie
c= mdx100/ms= 22,2x100/200%=11,1%
Explicație: