Tollensova reackija

Submitted by Immortalius on Wed, 06/25/2014 - 16:49
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Koliko se grama srebra izdvoji Tollensovom reakcijom iz 100cm3 rastvora aldopentoze masene koncentracije 1.5g/dm3

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milicaradenkovic - Wed, 06/25/2014 - 18:29

C5H10O5+2(Ag(NH3)2)OH-------------------->2Ag+4NH3+C5H10O6+H2O

c=y/Mr=1.5/150=0.01 mol/l

n=c*V=0.01*0.1=0.0001 mol

n(Ag)=2*n=2*0.0001=0.0002 mol

m(Ag)=n(Ag)*Mr=0.0002*108=0.0216 g

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Immortalius - Wed, 06/25/2014 - 18:45

Mislim da si jednu nulu  pogrijesila ali nema veze.

Hvala

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milicaradenkovic - Thu, 06/26/2014 - 08:22

Jeste izvini .