Fill in the Blanks Question 36Online version Acidic , basic and amphoteric by CHUA BI YUN Moe 1 NaOH MgO 2MgO 3H2O 2HCl H2 + ? MgCl2 + 2 6HCl 2H2O 2AlCl3 3H2 NaOH Al2O3 + ? + 3 2NaAl 3NaOH 2H2O 3H2O HCl 2NaOH Al2O3 + + ? ( OH ) 4 4 2NaOH HCl Na2SO4 2H2O 3NaOH H2 SO3 + ? +