M,KOH= 56g/mol
M,H2SO4= 98g/mol
-din ecuatia reactiei aflu cat acid a reactionat cu 10gKOH
98g............2x56g
H2SO4+2KOH--> K2SO4+2H2O
m=............10g
m=8,75gH2SO4
-daca tot acidul din 150gsolutie a intrat in reactie, aceasta masa reprezinta masa care a fost dizolvata,md
c/100= md/ms
c= 8,75x100/ 150--------------------.>calculeaza !!!!