Can you please write balanced net ionic equation for these four reactiona?

Question

a) Aluminum reacts with KOH and water forming potassium ions, [Al(OH04]- and hydrogen gas.

b) hydrogen ions from the acid react with the tetrahydroxoaluminate ions to precipitate aluminium hydroxide.

c) Aluminium hydroxide reacts with addition hydrogen ions and water to form [Al(H2O)6]3+.

d) Alum forms from the potassium ions, hydrated aluminium ions, sulfate ions and water.

Thank you.

Answer 1

For redox reactions, please always start from half reaction. If you may not be able to write out yourself, please check the sources such as EMF.
(a) Al + 4OH- ---> [Al(OH)4]- + 3e...(1)
2H2O + 2e ---> 2OH- + H2........(2)
2(1)+3(2):
2Al + 2OH- + 6H2O ---> 2[Al(OH)4]- + 3H2

(b) H+ + [Al(OH)4]- ---> H2O + Al(OH)3

(c) Al(OH)3 + 3H2O + 3H+ ---> [Al(H2O)6]3+

(d) [Al(H2O)6]3+ + K+ + 2[SO4]2- ---> KAl(SO4)2 + 6H2O

Answer 2

final answer for a) should be 2Al + 2KOH- + 6H2O --->2K+ 2[Al(OH)4]- + 3H2
*if you used potassium hydroxide in the lab*

Answer 3

(a million) LiCl (aq) + AgNO3 (aq) ----> AgCl (sturdy) + LiNO3 (aq) internet Ionic Equation : [ Cl- ] (aq) + [ Ag+ ] (aq) ----> AgCl (sturdy) Spectator Cation = [ Li+ ] Spectator Anion = [ NO3- ] (2) 3 MgSO4(aq) + 2 Na3PO4(aq) ----> Mg3(PO4)2 (sturdy) + 3 Na2SO4 (aq) internet Ionic Equation : [ Mg++ ] (aq) + [ PO4--- ] (aq) ----> Mg3(PO4)2 (sturdy) Spectator Cation = [ Na+ ] Spectator Anion = [ SO4-- ] (3) Ba(OH)2 (aq) + Na2SO4 (aq) ----> BaSO4 (sturdy) + 2 NaOH (aq) internet Ionic Equation : [ Ba++ ] (aq) + [ SO4-- ] (aq) ----> BaSO4 (sturdy) Spectator Cation = [ Na+ ] Spectator Anion = [ OH- ] (4) AlCl3 (aq) + 3 KOH (aq) ----> Al(OH)3 (sturdy) + 3 KCl (aq) internet Ionic Equation : [ Al+++ ] (aq) + 3 [ OH- ] (aq) ----> Al(OH)3 (sturdy) Spectator Cation = [ ok+ ] Spectator Anion = [ Cl- ] notice : with extra KOH , the Al(OH)3 will dissolve Al(OH)3 (sturdy) + KOH (aq) ----> KAlO2 (aq) + 2 H2O (liquid) internet Ionic Equation : Al(OH)3 (sturdy) + [ OH- ] (aq) ----> [ AlO2- ] (aq) + 2 H2O (liquid) Spectator Cation = [ ok+ ] Spectator Anion = None

Answer 4

Thanks so much. Saved my chemistry grade for the semester.