Zasicena masna kiselina

Submitted by Veka on Mon, 11/03/2014 - 20:52
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Koliko dvostrukih veza sadrzi zasicena masna kiselina Mr=278 ako 3,89g te kiseline adira 6,72g broma?

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milicaradenkovic - Tue, 11/04/2014 - 07:19

CxHy+Br2-------------------->CxHyBr2

n(Br2)=m/Mr=6.72/160=0.042 mol

3.89 g-------------------------0.042 mol Br2

278 g------------------------------x mol Br2

x=278*0.042/3.89=3 mol i kiselina ima 3 dvostruke veze