Question

identifying bases
which substances are bases? check all that apply.
naoh
koh
$h_3bo_3$
nacl
$ca(oh)_2$
$fe_2o_3$

Explanation:

Bases (Arrhenius definition) release hydroxide ions ($OH^-$) in water. NaOH, KOH, and $Ca(OH)_2$ are ionic compounds that dissociate to produce $OH^-$ ions. $H_3BO_3$ is a weak acid, NaCl is a salt, and $Fe_2O_3$ is a metal oxide that is not an aqueous base.

Answer:

• NaOH
• KOH
• $Ca(OH)_2$