Amphoteric hydroxides react with both alkalies and acids. Which of the following Group-2 metal hydroxides is soluble in sodium hydroxide ?

Amphoteric hydroxides react with both alkalies and acids. Which of the

1.	Amphoteric hydroxides react with both alkalies and acids. Which of the following Group-2 metal hydroxides is soluble in sodium hydroxide ?
Answer» `Be(OH)_(2)` `Mg(OH)_(2)` `CA(OH)_(2)` `Ba(OH)_(2)` SOLUTION :`Be(OH)_(2)` is insoluble in water due to its very high LATTICE enthalpy and high hydration enthalpy. It reacts with acid to give salt and water, and with base to give beryllate and water. `Be(OH)_(2)+2HCl to BeCl_(2) +2H_(2)O` `Be(OH)_(2)+2NaOH to Na_(2)BeO_(2) +2H_(2)O`