4 Write the balanced equation for the reaction of aluminum p
4. Write the balanced equation for the reaction of aluminum, potassium hydroxide and sulfuric acid to make alum, KAUSO.)2-12H20, and hydrogen gas, water the solvent, but is also a reactant. (You can add the equations on page 42 to determine the equation -see the help sheet posted on Bb.) AI + KOH + H2SO4 + H2O KAI(SO4)2-12H2O + H2
Solution
Aluminum react with KOH and H2So4 to gives alum
Al + KOH + H2SO4 + H2O ----------------> KAl(SO4)2.12H2O + H2
2Al + 2KOH + 4H2SO4 + 22H2O ----------------> 2[KAl(SO4)2.12H2O] + 3H2
