HCl se formeaza prin react. dintre clor si hidrogen
284 g xg
H2 + Cl2= 2HCl
71g 2.36,5g
MHCl=1+ 35,5=36,5------->1mol=36,5g
MCl2=2.35,5=71-------> 1mol=71g
x=284.2.36,5 : 71=292 g HCl