Write equations for the reactions of
 
i. Iron with steam

ii. Calcium and potassium with water
  
i. The equation for the reaction of iron with steam:
 
\(xFe(s) + yH_2O (g) → X+ 4H_2(g)\)
 
Where x, y and X, respectively, are
 
ii. The equation for the reaction of calcium and potassium with water:
 
\(Ca(s)+2H_2O (l) → Ca(OH)_2 (aq) + Y\)
 
Where Y is
\(2K(s)+2H_2O (l) → 2KOH(aq) + Z\)
 
Where Z is