Răspuns:
Explicație:
- se afla md sol. de H2SO4
md =c.ms :100
md=98 .200 : 100=196 g H2SO4
xg 196g yg zg
CuO + H2SO4=CuSO4 + H2O
80g 98g 160g 18g
x=80 . 196 : 98=160g CuO
n=m:M
n= 160g : 80g/moli=2moli CuO
y= 196.160 : 98=320 g CuSO4
n=320g : 160g/moli=2moli CuSO4
z=196 .18 : 98=36g H2O
n= 36g : 18g/moli=2 moli H2O
MCuO=64 +16=80---->80g/moli
MCuSO4=64 + 32 +4.16=160------> 160g/moli
MH2SO4=2+32 +4.16=98----->98g/moli