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Calculeaza concentratia molara a unei solutii de acid sulfuric de concentratie 49%. Densitatea=1,29g/cm3.

Răspuns :

Cp=49%
ro=1.29g/cm3
Presupunem V=1L
ro=ms/V =>ms=ro*V=1.29g/cm3*1000cm3=1290g
Cp=md/ms*100 =>md=Cp*ms/100=49*1290/100=632.1g
Cm=md/M*Vs=632.1/98*1=6.45 moli/L
MH2SO4=2+32+64=98g/mol