Option (2) is correct. PO43- is a conjugate base of HPO42-. To make conjugate base of any acid it had to donate H+ from Acid.
According to Bronsted-Lowery conjugated acid base theory, the acid is a substance which can donate proton to form its conjugate base.
15 5 points Which ion below is the conjugate base of HPO42-? o H2P04 O PO43-...
Which of the following is a conjugate acid/ base pair? A) H3PO4, PO43- B) H2PO4 , PO43- C) HPO42-, PO43- D) H3PO4, HPO42-
Question 38 (1 point) Which of the following is the conjugate acid of HPO42- H3PO4 H2P04 PO43- H30*
18. Which of the following is the conjugate base of the dihydrogenphosphate ion, H2PO4-? A) H3PO4 B) NaH2PO4 C) OH- D) HPO42- E) PO43-
All of the following are acid-base conjugate pairs EXCEPT A. HPO42-, PO43- B. H3O+, OH- C. CH3COOH, CH3COO- D. NH4+, NH3 E. H2O, H3O+
Which of the following is not a conjugate acid-base pair? A H20 and H30+ B. H3PO4 and H2PO4 C. H3PO4 and HPO42- D. HPO42- and PO43 E. H2PO4 and HPO42-
Which Ka for H3PO4 is represented by the expression:? [H3O+] [PO43-] ————— [HPO42-]: Ka3 Ka1 Ka2 Kb3
Question 23 12 points) Which species is the conjugate acid of HPO42-? O A OH OB) H2PO4- OC) PO43- OD H₂O O E) P₂O
2. HSOA and PO43- The bases in the reaction below are: 5042- (aq) + HPO42- (aq) = H504 (aq) + PO43- (aq) Ob. HPO42- and PO43- Oc5042- and H5047 O d. 5042- and HPO42- Oe. HPO42- and H504 Of. 5042- and PO43- Assuming equal initial concentrations of the given species, which of the following has the weakest conjugate base in aqueous solution? Ка= 2.0 x 106 ОД- НВ О. НА Ка? 5.0 x 10-4 OCHD Кав 6.0 x 10-2 Od....
Which acid is the strongest? H3PO4 OH2PO4 HPO42- PO43- H2O
Question 11 (2 points) D Which of the following does not represent a conjugate acid-base pair? HCO3/CO32 H3PO4/HPO42 OH/O-2 NH4 /NH3 Save Question 12 (2 points) D Consider the weak acid HCO3 whose pKa -10.32, which form will pre