RASTVORI

IvanArsic's picture

Koliko je kubnih centimetara 92 procenata sumporne kis.gustine 1,824g/cm3 potrebno za pripremanje 5dm3 20-to procentnog rastvora H2SO4,cija je gustina 1,14g/cm3?

milicaradenkovic's picture

mr2=V2*ro2=5000*1.14=5700 g

ms2=mr2*w2=0.2*5700=1140 g

ms1=ms2=1140 g

mr1=ms1/w1=1140/0.92=1239.1 g

V1=mr1/ro1=1239.1/1.824=679.33 cm3 92% H2SO4

IvanArsic's picture

Milice,a kako to da je V2 5000?

IvanArsic's picture

ok je.