Chemistry homework?

Question

HCl+Fe->a+b
HCl+MgO->c+d
HCl+Al(OH)3->e+d
HCl+CaCo2->d+g+f

Thx

Answer 1

Previous answer is wrong.

a is H2
b is FeCl2

c is MgCl2
d is H2O

d is H2O
e is AlCl3

d is H2O
f is CaCl2
g is CO2

Starting compound for the last reaction should be CaCO3

You didn't ask for balanced equations, but with the compounds you could figure that out, right?

Answer 2

FeCl + H^+
Mg CL + OH^-
Al(Cl)3 + H2O
Ca (Cl)2 + Co + H ^+

Please check them with reactivity series. But besides that I think they are correct answer.

I hope this helps!