monoprotic acid = HCl, HNO3 , CH3COOH, HCOOH, etc , whcih has only 1 H+ to give
diprotic acid = H2SO4 , H2CO3 , (COOH)2 which are able to give 2 protons
triprotic acid = H3PO4 , citric acid
strong acid = all the proton donors which dissociates completely in water and has low pKa are strong acids.
HCl, HNO3 ,H2SO4
weak acid = all the proton donors which doesn't dissociate completely in water and has higher pKa are weak acids.
CH3COOH, HCOOH,(COOH)2 .
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