16
Equation 1: CuSO4 and NaOH
Equation 2: Fe and CuSO4
Based on the type of reaction, which reaction can be used to extract copper metal
from copper sulfate solution?
4
1)
Equation 1, because Na being more reactive, exchanges position with Cu in
CuSO4
7
2) Equation 2, because Fe being more reactive, replaces S from CuSO4
3)
Equation 1, because Na being more reactive, exchanges position with S in
CuSO4
10
4) Equation 2. because Fe being more reactive replaces Cu from Cuso,
13

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.