Răspuns:
Rezolvarea propusa
Masa de antrachinona C₁₄H₈O₂ (X, necunoscuta, Kg) se calculeaza stoechiometric din cantitatea pura de antracen (C₁₄H₁₀), Kg
- Calculam masa pura de antracen, daca puritatea=50% (antracen pur in 100% antracen impur)
m pur = 712 Kg .50/100=356 Kg
- Calculam X (Kg) antrachinona
M C₁₄H₁₀=178 Kmol/Kg
M C₁₄H₈O₂ = 208 Kmol/Kg
356 Kg .......................................................X
C₁₄H₁₀ +3 O (din bicromat si acid acetic) → C₁₄H₈O₂ +H₂O
178 ...............................................................................208
X = 356 Kg .208/178 =416 Kg
R : varianta C, 416 Kg
Explicație:
