In which of the following reactions does H2PO4- act as an acid? Options: A . &nbspH3PO4 + H2O --> H3O+ + H2PO4- B . &nbspH2PO4- + H2O --> H3O+ + HPO42- C . &nbspH2PO4- + OH- --> H3PO4 + O2- D . &nbspThe ion cannot act as an acid

In which of the following reactions does H2PO4- act as an acid?

Question

In which of the following reactions does H2PO4- act as an acid?

Options:

A . H3PO4 + H2O --> H3O+ + H2PO4-

B . H2PO4- + H2O --> H3O+ + HPO42-

C . H2PO4- + OH- --> H3PO4 + O2-

D . The ion cannot act as an acid

Answer: Option B

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