Question

se amesteca doua solutii de acid sulfuric una de c=80 % si cealalta de c=20% .Sa se afle concentratia solutiei rezultate ,stiind ca md1=4md2

Answer 1

80=(md1/ms1)*100

20=(md2/ms2)*100

ms1=(md1/80)*100

ms1=5md1/4-->ms1=20md2/4-->ms1=5md2

ms2=(md2/20)*100

ms2=5md2

c.finala=(md1+md2)*100/(ms1+ms2)

=5md2*100/10md2

=500/10

=50%

Dacă ai neclaritati intreaba ma