Select polybasic Arrhenius acids form the following :H_(3)PO_(2),H_(3)PO_(3),H_(3)BO_(3),HCOOH,(COOH)_(2) b Write conjugate acids of SO_(4)^(2-),RNH_(2),NH_(2)^(-),C_(2)H_(5)OC_(2)H_(5),F^(-) c Write conjugate base of HNO_(2),OH^(-),H_(2)CO_(3),HClO_(4) d Write conjugate acid and conjugate base of following amphoteric species: HS^(-),NH_(3).C_(2)H_(5)OH,H_(2)O e Classify the following into Lewis base : H^(+),FeCl_(3),(CH_(3))_(3)N,F-,CH_(2)-
Give the conjugate bases of (i) H_(2)O (ii) HNO_(3) (iii) NH_(4)^(+) (Iv) HCO_(3)^(-).
Three reactions involving H_(2)PO_(4)^(-) are given below I. H_(3)PO_(4)+H_(2)OrarrH_(3)O^(+)+H_(2)PO_(4)^(-) II. H_(2)PO_(4)^(-)+H_(2)OrarrHPO_(4)^(2-)+H_(3)O^(+) III. H_(2)PO_(4)^(-)+OH^(-)rarrH_(3)PO_(4)+O^(2-) In which of the above does H_(2)PO_(4)^(-) act as an acid?
Calculate the equilibrium constants for the reactions with water of H_(2)PO_(4)^(Theta), HPO_(4)^(2-) , and PO_(4)^(3-) as ase. Comparing the relative values of two equilibrium constants of H_(2)PO_(4)^(Theta) with water, deduce whether solutions of this ion in water are acidic or base, Deduce whether solutions of HPO_(4)^(2-) are acidic or bases. Given K_(1),K_(2) ,and K_(3) for H_(3)PO_(4) are 7.1 xx 10^(-3), 6.3 xx 10^(-8) , and 4.5 xx 10^(-13) respectively.