22: An alloy 20g made up of (AL, Zn and cu) is dipped in an excess 'hydrochloric acid.
Knowing that the percentage by mass of Al was
27% and 6.6 g of residue were
obtained at the end of the reaction.
a. Indicate the redox Couples
b. Compute the mass of each metal
c. Write the half reaction that took place.
d. Deduce the over all equations
e. Compute the volume of the liberated
AL:27 Zn:65 Vm:24
f. Arrange the above couples on the electro
chemical classification