One of the following is a Bronsted acid but not a Bronsted base:

Options

A. `H_(2)S`
B. `H_(2)S`
C. `HCO_(3)^(Theta)`
D. `NH_(3)`

Answer

A

Explanation

Bronsted acid is which gives `H^(o+)` ions and Bronsted base is which accepts `H^(o+)` ions.
So `H_(2)S` gives `H^(o+)` ions but cannot accept `H^(o+)`. While others `H_(2)O,HCO_(3)^(Theta),NH_(3)` can given and accept `H^(o+)` ions.