Rastvor

Amina's picture

Koliko treba dodati vode u 500 ml 67% HNO3 čija je gustina 1.4 kg/l da se dbije 10% rastvor?

milicaradenkovic's picture

mr=V*ro=0.5*1.4=0.7 kg

ms=mr*w=0.67*0.7=0.469 kg

ms1=ms=0.469 kg

mr1=ms1/w=0.469*10(3)/0.10=4690 g

m(vode)=mr1-ms=4690-469=4221 g

m(vode)1=mr-ms=700-469=231 g

m(vode)ostao=m(vode)-m(vode)1=4221-231=3990 g ili 3990 ml posto je ro(vode)=1 g/cm3