Question

Calculati masa de solutie de acid chilibric de concentratia c=18,25% care se consuma in in reactia cu 200 g carbonat de calciu CaCo=200 g si volum masurat in conditi morale ale gazului degajat.

Answer 1

tu ai citit ce ai scris ???????????????????

100g.........2mol...................................1mol
CaCO3  + 2HCl----> CaCl2 +  H2O+  CO2↑
200g..........x= 4mol HCl.....................y=2molCO2

m,HCl=4x36,5g/mol=146g=> este masa dizolvata,md, in relatia:
c%=mdx100/ms
18,25= 146x100/ms--> ms=14600/18,25g=.................calculeaza !!!

V= nx22,4= 2x22,4 l =..............calculeaza !!!!