Base tan

`@ KOH ` ( potassium hydroxide)

`@NaOH ` ( sodium hydroxide)

`@  Ba(OH)_2` ( barium hydroxide)

`@ LiOH ` ( litium hydroxide)

`@ NH_4OH` (amonium hydroxide)

Base ít tan

`@ Ca(OH)_2 ` ( calcium hydroxide)

`@ Sr(OH)_2` ( strontium hydroxide)

Base không tan ( một số)

`@ Cu(OH)_2 ` ( copper `(II)` hydroxide)

`@Mg(OH)_2` (magnesium hydroxide)

`@Zn(OH)_2 ` ( zinc hydroxide)

`@ Al(OH)_3 ` ( aluminium hydroxide)

`@ Fe(OH)_2 ` (iron`(II)` hydroxide)

`@ Fe(OH)_3 ` ( iron `(III)` hydroxide)