8. complete neutralization requires one H+ for each OH-.
Al(OH)3 has three avaliable OH- ions and H2SO4 can only provide two H+ ions, the re action requires two moles of Al(OH)3 for three moles of H2SO4.
2Al(OH)3 + 3 H2SO4 -------> Al2(SO4)3 + 6H2O
neutralization and salts