Question

how to determine acid is monobasic or dibasic

Answer 1

Monobasic Acids also know as monoprotic acids

These are acids which yield one free hydrogen ion in solution for each molecule of acid ionized. An example of a monobasic acid is hydrochloric acid (HCl).
HCl → H+ + Cl -

Dibasic Acids also know as diprotic acids
These are acids which yield two free hydrogen ions in solution for each molecule of acid ionized. An example of a dibasic acid is sulphuric acid H2SO4.
H2SO4 → 2H+ + SO42-

Tribasic Acids also know as triprotic acids
These are acids which yield three free hydrogen ions in solution for each molecule of acid ionized. An example of a tribasic acid is phosphoric acid (H3PO4).
H3PO4 → 3H + + PO43-

Answer 2

Explanation:

monobasic monobasic monobasic