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Avand la dispozitie HCL 37% (ρ=1,19 g/[tex] cm^{3} [/tex]) sa se prepare 500 ml solutie HCL 2N (mase atomice: H-1 Cl-35,4)

Răspuns :

ro=ms/V=>ms=1,19*500=595g HCl

C=md/ms*100=>md=37*595/100=220,15g HCl

ms=md+mH2O=>mH2O=ms-md=595-220,15=274,85g H2O

Se cantaresc 220,15g HCl si se dizolva in 274,85mL H2O

nu sunt sigur..