Question

In urma sulfonarii benzenului s au obtinut 1580kg acid benzen sulfonic . Acodul sulfuric se ia in exces si numai 50% din el s a transformat . Care este masa de solutie de acid sulfuric , de concentratie 98%, luata in lucru ?

Answer 1

C6H6 + HO-SO3H -> C6H5-SO3H + H2O
MC6H5-SO3H=158g/mol
MH2SO4=98g/mol
98kg............158kg
xkg................1580kg
x=1580*98/158=980kg H2SO4
50/100*980=490kg H2SO4
Cp=md/ms*100 => ms=md*100/Cp=490*100/98=500 kg solutie H2SO4