Răspuns:
--calculez masa de acid din solutie
c=mdx100/ms---> md= 25x1250/100g= 312,5gHCl
Explicație:--
-deduc masa de clorat,ce intra in reactie, stiind M,KClO3=122,5g/mol M,HCl= 36,5g/mol, din ecuatia reactiei
1mol.........6mol sau, in grame
KClO3 + 6HCl ---> KCl+ 3Cl2+ 3H2O
122,5g.......6x36,5g
x...................312,5g
x= 312,5x122,5/6x36,5 g=....................calculeaza !!!!!
