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care este concentratia a 250 g solutie de acid sulfuric stiind ca teactioneaza stoechiometric cu 0,5 moli zinc?

Răspuns :

H2SO4 + Zn --> ZnSO4 + H2

1mol H2SO4.....1mol Zn
0.5mol..............0.5mol

n=md/M==>md=n*M=0.5*98=49g H2SO4

Cp=md/ms*100=49/200*100=24.5%

MH2SO4=98g/mol