▁factor ▁is ▁not ▁taken ▁into ▁account . ▁One ▁advantage ▁of ▁this ▁low ▁sol ub ility ▁is ▁that ▁" many ▁ant ac ids ▁were ▁susp ensions ▁of ▁metal ▁hydro x ides ▁such ▁as ▁al umin ium ▁hydro x ide ▁and ▁mag nes ium ▁hydro x ide ." ▁These ▁comp ounds ▁have ▁low ▁sol ub ility ▁and ▁have ▁the ▁ability ▁to ▁stop ▁an ▁increase ▁in ▁the ▁concentration ▁of ▁the ▁hydro x ide ▁ion , ▁prevent ing ▁the ▁harm ▁of ▁the ▁t issues ▁in ▁the ▁mouth , ▁o es oph ag us , ▁and ▁st om ach . ▁As ▁the ▁reaction ▁continues ▁and ▁the ▁sal ts ▁dissol ve , ▁the ▁st om ach ▁acid ▁react s ▁with ▁the ▁hydro x ide ▁produced ▁by ▁the ▁susp ensions . ▁Str ong ▁bases ▁hydro ly ze ▁in ▁water ▁almost ▁completely , ▁resulting ▁in ▁the ▁level ing ▁effect ." ▁In ▁this ▁process , ▁the ▁water ▁mole c ule ▁comb ines ▁with ▁a ▁strong ▁base , ▁due ▁to ▁the ▁water ' s ▁am ph oter ic ▁ability ; ▁and , ▁a ▁hydro x ide ▁ion ▁is ▁released . ▁Very ▁strong ▁bases ▁can ▁even ▁de pro ton ate ▁very ▁weak ly ▁acid ic ▁C – H ▁groups ▁in ▁the ▁absence ▁of ▁water . ▁Here ▁is ▁a ▁list ▁of ▁several ▁strong ▁bases : ▁ ▁The ▁c ations ▁of ▁these ▁strong ▁bases ▁appear ▁in ▁the ▁first ▁and ▁second ▁groups ▁of ▁the ▁periodic ▁table ▁( alk ali ▁and ▁earth ▁alk ali ▁met als ). ▁T etra alk yl ated ▁am mon ium ▁hydro x ides