In primul rand, pe reactia chimica se foloseste doar masa pura (md). Deci, folosind C/100=md/ms => md= 80*300/100 => md = 240g
Nr moli H2SO4 = 240/98 => nH2SO4 = 2.44g/mol
H2SO4 + 2NaCl --> 2HCl + Na2SO4
Fie x = n HCl
2.44................x
1...............2
x=4,88g/mol
Volum HCl = 4.88*22.4 => Volumul = 109.31
Fie y = n Na2SO4
2.44 ............. y
1 ..................... 1
y = 2.44 => Nr moli Na2SO4 = 2.44