Question

Intr-un vas care contine 782,4 cm3 solutie de H2SO4 de concentatei 60 %,cu densitatea egala cu 1,503 g/cm3 se adauga 2450g de solutie H2SO4 de concentratie 88%. Saa se calculeze concentratia solutiei finale.

Answer 1

ro=ms/V=>ms=ro*V=1,503*782,4=1175,9472g sol. H2SO4

C=md/ms*100 => md=C*ms/100=60*1175,9472/100=705,56832g H2SO4

C=md/ms*100 => md=C*ms/100=88*2450/100=2156g H2SO4

md final = 705,56832+2156=2861,56832g H2SO4

ms final = 1175,9472+2450 = 3625,9472g sol. H2SO4

Cfinal = mdf/msf*100 = 2861,56832/3625,9472*100 = Calculeaza !!!