These are the chemical reactions involved in the conversion of magnesium (Mg) to calcium sulfate (CaSO4). Here is the step-by-step breakdown of the reactions:

Mg (Magnesium) reacts with sulfuric acid (H2SO4) to form magnesium sulfate (MgSO4).
Mg + H2SO4 -> MgSO4 + H2

MgSO4 (Magnesium sulfate) reacts with aluminum sulfate (Al2(SO4)3) to form aluminum hydroxide (Al(OH)3) and magnesium sulfate (MgSO4).
MgSO4 + Al2(SO4)3 -> 2Al(OH)3 + 3MgSO4

Aluminum hydroxide (Al(OH)3) reacts with sulfuric acid (H2SO4) to form aluminum sulfate (Al2(SO4)3) and water (H2O).
2Al(OH)3 + 3H2SO4 -> Al2(SO4)3 + 6H2O

Aluminum sulfate (Al2(SO4)3) reacts with copper sulfate (CuSO4) to form copper aluminum sulfate (CuAl(SO4)2) and aluminum sulfate (Al2(SO4)3).
Al2(SO4)3 + 3CuSO4 -> 2CuAl(SO4)2 + 3Al2(SO4)3

Copper aluminum sulfate (CuAl(SO4)2) reacts with potassium sulfate (K2SO4) to form copper sulfate (CuSO4) and potassium aluminum sulfate (KAl(SO4)2).
CuAl(SO4)2 + K2SO4 -> CuSO4 + KAl(SO4)2

Potassium aluminum sulfate (KAl(SO4)2) reacts with calcium chloride (CaCl2) to form calcium sulfate (CaSO4) and potassium chloride (KCl).
KAl(SO4)2 + CaCl2 -> CaSO4 + 2KCl

Therefore, the overall reaction is:
Mg + H2SO4 + Al2(SO4)3 + 3CuSO4 + K2SO4 + CaCl2 -> CaSO4 + 2KCl + 3MgSO4 + 2CuSO4 + 3Al2(SO4)3 + 6H2O

This reaction pathway demonstrates the step-by-step chemical transformation from magnesium to calcium sulfate through various sulfate compounds.