solutie 1 : ms1 = 200g c1 = 15% ⇒ md1 = 30g Vs1 = 200·1,05 =210 ml
solutie 2 : ms2 = 300g c2 = 30% ⇒ md2 = 90g Vs2 = 300·1,1 = 330ml
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solutia finala : ms = 500g md = 120g c = 120··100/500 = 24%
Vs = 0,54 l n = 120/60 = 2 moli cM = 2/54 = 0,037 mol/l