The acid anhydride that will produce weak acid in water is?

A. SO3
B. NO2
C. SO2
D. CO2

Correct Answer:

Option D – CO2

Explanation

H2CO3 is an example of a weak acid while H2SO4 and HNO3 are examples of strong acid.

CO2 combines with water to give a weak trioxocarbonate (IV) acid.

CO2 + H2O → H2CO3