Question

Care este densitatea unei solutii de acid sulfuric care are concentratia procentuala 95.72% si concentratia molara 17.91 M?

Answer 1

ro= m/V
Calculez masa de solutie care contine masa a  un mol acid(98g)
c= mdx100/ms
95,72/100=98/ms---> ms=102,38g

Calculez volumul in care se gaseste aceeasi cantitate de acid,1 mol 
c= n,mol/V,l
17,91=1/ V----> V= 0,0319 L= 31,9ml(cmcub)

ro= 102,38g/31,9ml=....................calculeaza !!!!