Question

Which is a conjugate pair in the following equilibrium? H2C2O4(aq) + HPO4(aq) 2- HC2O4(aq)- + H2PO4(aq)-

Answer 1

Explanation

According to Bronsted Lowry acid-base theory:

• Conjugate acid is a species formed by the addition of proton to the base. or species . Or those chemical species which accepts protons.
• Conjugate base is a species formed by the removal one proton from the acid. Or those chemical species which donates the proton.
• Here proton is $H^+$

$H_2C_2O_4(aq)+HPO_{4}^{2-}(aq)\rightarrow HC_2O_{4}^-(aq) + H_2PO_{4}^-(aq)$

1) Acid will form conjugate base: $H_2C_2O_4(aq)$   forming conjugate base $H_1C_2O_{4}^-(aq)$

2) Base will form conjugate acid :$HPO_{4}^{2-}$ forming conjugate acid $H_2PO_{4}^{-}(aq)$

Answer 2

 its B on plato .. ... . .. . . . . . . ..