-calculez masa de MgSO4 dizolvat i
n solutia data
c/100= md/ms
15/100= md/500----> md=75gMgSO4
ECUATIA REACTIEI:
1mol 2mol 1mol........1mol
MgSO4 + 2HCl----> MgCl2 + H2SO4
120g.........2x36,5........95g...........98g
75g............x.................y..............z
a. m,HCl= 75x2x36,5/120g=........
b. m,MgCl2= 75x95/120g=...............
120, 36,5 ,95 si 98 sunt masele molare ale substantelor participante la reactie, calculate cu masele atomice din S.p.
m,H2SO4= 75X98/120g=......................calculeaza !!!!