# What are some examples of weak Arrhenius acids and bases?

${H}_{3} P {O}_{4} , H C N , C {H}_{3} C O O H , {H}_{3} P {O}_{3} , {H}_{2} S , {H}_{2} {C}_{2} {O}_{4}$
$N {H}_{4} O H , R - N {H}_{2} , A r - N {H}_{2} , {C}_{5} {H}_{5} N$
Where, $R$ denotes alkyl group and $A r$ denotes Aryl group.