Question

Pirita FeS cu masa de 5 kg ce contitine impuritati 5 % a interactionat cu exces de acid clorhidric.Determinati volumul gazuluiobtinut H2S. VA ROG MULT ROG MULT

Answer 1

95/100*5=4,75kg FeS pur

MFeS=88kg/kmol

n=m/M=4,75/88=0,053977 kmoli FeS = 53,977 moli FeS

FeS + 2HCl => FeCl2 + H2S

1 mol FeS.............................22,4L H2S
53,977 moli  FeS...................xL H2S

x=22,4*53,977=1209,09L H2S