Question

Avem ecuatia : C + 2CuO -> CO2 + 2Cu .... Deasupra lui " C " punem 12 g iar dedesubt 1,2 g .... Deasupra lui " 2CuO " avem 80 g iar dedesubt X g . P. CuO = 80% ... P = 10 g CuO. Aflati masa CO2 = ? SI Masa Cu = ?

Answer 1

C + 2CuO => CO2 + 2Cu

12g C............2*80g CuO.............44g CO2..........2*64g Cu
1,2g C.............x=16g CuO...........y=4,4g CO2.....z=12,8g Cu

x=2*80*1,2/12 =

y=44*1,2/12 = 

z=2*64*1,2/12 = 

p=mp/mimp*100=>mimp=mp*100/p=16*100/80=20g CuO