Question

Which one of the given is hydracid?

O H3PO4
O H2SO4
OHCN
O HNO3

Answer 1

HCN is a hydracid.

Explanation:

• Hydracids are compounds that contain hydrogen and non-metal element except oxygen.

• Examples: $HCl$(Hydrochloric acid) and $HCN$ (Hydrogen cyanide)

• The non-metal included in the compound is mainly from the chalcogen (Group $16$) or halogen (Group $17$) group.

• $HCN$ is also known as a Prussic acid. It is anhydrous, colorless, extremely toxic, and has a low boiling point.

• It also used a chemical weapon agent and it is a deadly poison by all means.

Answer 2

c) HCN is the cirrect answer