Question

Which of the following acids are considered to be polyprotic? Mark all that apply.

a) HCl
b) HClO3
c) HNO3
d) H2CrO4
e) HC2H3O2
f) H3PO4
g) HI
h) H2SO4
i) HBr

Answer 1

The polyprotic acids in the list are H2CrO4 (Chromic acid), H3PO4 (Phosphoric acid), and H2SO4 (Sulfuric acid), which can donate more than one proton per molecule. The rest are monoprotic, donating only a single proton per molecule.

Step-by-step explanation:

The question seeks to identify which of the given acids are polyprotic. Polyprotic acids are capable of donating more than one proton per molecule. From the given list, the polyprotic acids are:

• H2CrO4 (Chromic acid) - diprotic
• H3PO4 (Phosphoric acid) - triprotic
• H2SO4 (Sulfuric acid) - diprotic

The other acids in the list, including HCl, HClO3, HNO3, HCI (typo for HCl), HC2H3O2 (Acetic acid), HI, and HBr are all monoprotic, meaning that they can donate only one proton per molecule.