Question

A weak base is added to water. Which information is required to find the strength of its conjugate acid?

Answer 1

Answer: C) the values of Kb and Kw

Explanation: i just took the test

Answer 2

Answer:

The values of Kb and Kw

Explanation:

The conjugated acid would produced when we have the reaction:

$A^- + H_2O~->~HA~+~OH^-$

The equilibrium of this reaction is rule the Kb expression. If we want to solve Ka we have to use the equation:

$Kw~=~Ka*Kb$

Solving for Ka:

$Ka=\frac{Kw}{Kb}$

Therefore we need to know Kw and Kb.