Which of the following bronsted lowry acids does not act as a strong acid when dissolved in water?

Question

A( HCLO4

B) HCN

C) HCL

D) H2SO4

Answer 1

HCN is a weak acid. Depending on the nature of your chem class, you may be asked to just memorize a list of common strong acids. If it is a higher level class, you may also consider the magnitude of the acids Ka value in order to determine its strength.