Three reactions involving H 2 PO 4-are given below: (i) H 3 PO 4+ H 2 O arrow H 3 O ++ H 2 PO 4- (ii) H 2 PO 4-+ H 2 O arrow H 2 PO 4-+ H 3 O + (iii) H 2 PO 4-+ OH -+ H 3 PO 4+ O 2- In which of the above does H 2 PO 4-act as an acid?

Question

Three reactions involving H 2 PO 4-are given below: (i) H 3 PO 4+ H 2 O arrow H 3 O ++ H 2 PO 4- (ii) H 2 PO 4-+ H 2 O arrow H 2 PO 4-+ H 3 O + (iii) H 2 PO 4-+ OH -+ H 3 PO 4+ O 2- In which of the above does H 2 PO 4-act as an acid? (A) (ii) only (B) (i) and (ii) (C) (iii) only (D) (i) only

Tardigrade Admin · Accepted Answer

Q. Three reactions involving H2​PO4−​are given below : (i) H3​PO4​+H2​O→H3​O++H2​PO4−​ (ii) H2​PO4−​+H2​O→H2​PO4−​+H3​O+ (iii) H2​PO4−​+OH−+H3​PO4​+O2− In which of the above does H2​PO4−​act as an acid?

(ii) only

(i) and (ii)

(iii) only

(i) only