Răspuns:
Explicație:
4
a. Zn + CuSO4=ZnSO4 + Cu
b.
mZn=10g
mCu=1,6g
%Zn transf.
xg 1,6g
Zn + CuSO4= ZnSO4 + Cu
65g 64g
x=65 . 1,6 : 64=1,616 g Zn consumat in reactie
10 - 1,616=8,384 g Zn in exces
10gZn--------------1,616g Zn cons.----------8,384g Zn in exces
100g--------------------y----------------------------------z
y=100. 1,616: 10=16,16% Zn transf.
z=100. 8,384 :10=83,84 % Zn netransformat